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JMýS {ç³Ô¶æ²MýS$ çÜÐ]l*-«§é¯]l… Æ>íÜ¯]l ™èlÆ>Ó™èl X™èl XíÜ, ™èlÆ>Ó† {ç³Ô¶æ²MýS$ çÜÐ]l*-«§é¯]l… Æ>Ä¶æ$yýl… Ð]l$…_¨. çÜÐ]l*-«§é-¯]l…ÌZ MîS Ð]lÆŠ‡zÞ HOÐðl¯é E…sôæ Ðésìæ° A…yýl-ÆŠ‡-OÌñæ¯Œl ^ólÄ¶æ*Í. Æð‡…yýl$ Ð]l*Æý‡$PË {ç³Ô¶æ²MýS$ 4&5 ÐéM>ÅÌZÏ çÜÐ]l*-«§é¯]l… Æ>Ä¶æ*Í. ¯éË$VýS$ Ð]l*Æý‡$PË {ç³Ô¶æ²MýS$ 8&-12 ÐéM>ÅÌZÏ çÜÐ]l*-«§é-¯]l-Ñ$-ÐéÓÍ. AÐ]l-çÜ-Æý‡-OÐðl$¯]l {ç³Ô¶æ²-ËMýS$ ç³sêË$ XÄ¶æ*Í. Mösìæt-Ðól-™èlË$ ÌôæMýS$…yé ^èl*çÜ$-Mø-ÐéÍ. {´ëMîSt‹Ü §éÓÆ> ^ól†Æ>-™èl¯]l$ Ððl$Æý‡$-VýS$-ç³-Æý‡-^èl$-Mø-ÐéÍ. Aç³šyól çÜÐ]l*-«§é-¯é°² »êV> {ç³gñæ…-sŒæ ^ólÄñæ¬^èl$a. A§ýl-¯]lç³# çÜÐ]l*-«§é¯]l ç³{™é-ËMýS$ Oò³ ¿êVýS…ÌZ õ³i ¯]l…ºÆý‡$Ï ÐólçÜ$-MøÐéÍ. Sir C.V. Raman explained the phenomenon of light scattering in gases and liquids. He found experimentally that the frequency of scattered light by the liquids is greater than the frequency of incident light. This is called Raman Effect. VýS$Æý‡$ÐéÆý‡… l íœ{ºÐ]lÇ l 18 l 2016 2 10th Class Special- Physical Science Physical Science.. Success Plan Prepared by: ¯éVýSÆ>fÔóæQÆŠæ, fyŠæï³òßæ^ŒæG‹Ü, ^é™èlMö…yýl, QÐ]l$Ã…. 4 Marks 1. Specific heat of some substances are given here Lead Brass Plint glass Kerosene Water Sea water IMPORTANT QUESTIONS 1 Mark 1. What would be the final temperature of mixture of 50g of water at 20oC temperature and 50g of water at 40oC temperature? A. m1 = 50g, m2=50g, T1 = 20oC, T2=40oC m T + m T2 = 3000 = 30o C 100 2. Explain why dogs pant during hot summer days using the concept of evaporation? A. Dogs do not have sweat pores on their skin, but only at their feet. The sweat produced by evaporation would not have way to go out. Hence it pant during hot summer days to maintain its body temperature balance. 3. Convert 37oC into kelvin? A. 37oC = 273+37 k = 310 k 4. What change do you observe when water changes from liquid to solid? A. Water expands on freezing 5. Water vapour of mass 2 kg at 100oC was condensed as water at 40oC. What is the heat liberated? A. From the given data m = 2 kg = 2000g ∆θ = 100–60=40oC L = 540 cal /g S= 1 cal /goC mL+ms∆θ = m(L+S∆θ) = 2000 (540+1×60) = 2000× 600 = 1200000 cals = 1200 k.cals 2 Marks 1. If you are chilly outside the shower stall, why do you feel warm after the bath if you stay in the bath room? 2. Mention the differences between evaporation and boiling? 3. What role does specific heat play in keeping a watermelon cool for a long time after removing it from a fridge? 4. Describe an activity to show that the water expands on freezing? 5. Explain the formation of dew with an example? Specific heat (Cal/goC) 0.031 0.092 0.12 0.5 1 0.95 5. Draw the diagram showing the arrangement of apparatus for electrolysis of water? 2. 3. 4. 5. i) If same quantity of water and sea water are heated for same time at same temperature, then which one gets heated fast? ii) In which of the above substances, the rate of increase or decrease in temperature will be less? iii) Why do the specific heats of different substances will be different? Write a report on the experiment that you have conducted to find the specific heat of lead using lead shots? Give the daily life implications of specific heat capacity? A copper ball of mass 3 kg has been heated in a furnace and dropped in 8 kg water at 100oC. The temperature of water was raised by 25oC. Find the temperature of the furnace (specific heat of copper is 0.1 cal /goC) Three liquids A, B and C are at 30oC, 20oC and 10oC. When equal amounts of A and B are mixed, then the resultant temperature is 26oC. Similarly when A and C are mixed, then the resultant temperature is 25oC, find the resultant temperature when B and C are mixed at equal amounts. IMPORTANT QUESTIONS 1 Mark 1. Complete the adjacent diagram. ↑ 0 Plastic Mug O2 H2 A. Test tubes 1 1 2 Resultant temperature T = m + m 1 2 50 × 20 + 50 × 40 50 + 50 3. REFLECTION OF LIGHT BY DIFFERENT SURFACES 2AgBr(Sun light)2Ag + Br Substance 1. HEAT = A. When a light yellow coloured silver bromide is kept in sunlight, it turns into grayish silver. Acidified water Graphite rods Anode Switch Cathode 9V Battery 2 Marks 1. Why do we consider respiration as an exothermic reaction? 2. A shiny brown coloured element 'X' on heating in air becomes black in colour. Can you predict the element 'X' and the black coloured substance formed? How do you support your predictions? 3. Write the names of any two alloys and write the metals present in them? 4. What do you interpret from the reaction? 2 NaOH + H2SO4 → Na2SO4+2H2O. What type of reaction is this? 5. What is the change that you have observed when iron nails are kept in copper sulphate solution for some time? Write a chemical equation for this reaction? 2. Magnification of a plane mirror is given as 1. What do you infer from this? A. 1) Size of image and size of object are same 2) The image is virtual. 3. Why do plane mirror suffer lateral inversion? A. Our brain feels that the reflected rays from a plane mirror are coming from inside the mirror. That is why the image suffers lateral inversion. 4. Draw a ray diagram such that the image must fall on the object by a concave mirror? A. o1 P F o I C I1 5. What do you mean by plane of reflection? A. The plane consisting of incident ray, reflected ray and the normal is known as plane of reflection. 2. CHEMICAL REACTIONS AND EQUATIONS IMPORTANT QUESTIONS 1 Mark 1. Which is oxidized and which is reduced in the following reaction MnO2 + 4 HCl → MnCl2+2H2O+Cl2 A. MnO2 is reduced and HCl is oxidized 2. How do you test the gases that are liberated in test tubes during electrolysis of water? A. Bring a burning match stick to a test tube, if it burns brightly then the gas is Oxygen and the other one is Hydrogen. If the burning match stick will put off with a pop sound, then the gas is Hydrogen and the other one is Oxygen. 3. What is Rancidity? A. Substances like oils and fats will spoil by losing their taste and odour due to oxidation when preserved for a long time is known as rancidity. 4. Give an example of Photo chemical reaction? 4 Marks 1. Balance the following chemical reactions a) Pb(NO3)2+KI → PbI2+KNO3 b) AgBr → Ag+Br2 c) Pb(NO3)2 → PbO +NO2 +O2 d) C3H8+O2 → CO2+H2O 2. Explain the procedure of experiment to observe a redox reaction. 3. Explain chemical combination, decomposition, displacement and double displacement reactions with one example each. 4. Discuss the effects of oxidation that you have observed in your daily life. 5. The following substances are provided to a student and asked to conduct experiments on types of chemical reactions. What experiments that he would have conducted? Copper sulphate solution, Barium chloride solution, crystals of ferrous sulphate, iron nails, Quick lime and water. 2 Marks 1. Draw a ray diagram showing formation of a virtual image through concave mirror? 2. An object is placed at a distance of 10cm before a concave mirror of focal length 15 cm. Find the position and characteristics of the image formed? 3. An object is placed at a distance of 10cm Oxidation is a reaction that involves the addition of oxygen or removal of hydrogen. Reduction is a reaction that involves the addition of hydrogen or removal of oxygen. Niels Henrik David Bohr was a Danish physicist who made foundational contributions to understanding atomic structure and quantum theory, for which he received the Nobel Prize in physics in 1922. Bohr was also a philosopher and a promoter. 4 Marks 1. Draw the ray diagrams to show the position of image when object is kept at different places before a concave mirror? 2. Explain the process of finding the normal to a curved plane? 3. Why do the reflectors in car head lights are arranged in parabolic shape? 4. You might have heard the story of Archimedes that he burned ships using mirrors? i) What type of mirrors he used? ii) Which energy that he used to burn ships? iii) What will be the shape that he arranged all the mirrors? iv) Draw a ray diagram that explains the principle involved in this? 4. ACIDS, BASES AND SALTS IMPORTANT QUESTIONS 1 Mark 1. Give an example for neutralization reaction? A. NaOH+HCl → NaCl+H2O 2. What is the gas liberated when an acid reacts with a metal? How do you test that gas? A. The gas liberated is H2. When a burning match stick is bought near to the H2 gas, it puts off with a 'pop' sound. 3. Ca(OH)2+Cl2 → CaOCl2+H2O. What is the bleaching agent in this reaction? A. CaOCl2 (Bleaching powder) 4. Write the names and formulae of any two chemicals obtained from common salt? A. Sodium carbonate (Na2CO3) Sodium Hydrogen carbonate (NaHCO3) 5. Why does not the pure water show conductivity? A. Pure water cannot produce ions. Hence it will not show conductivity. 2 Marks 1. While diluting an acid, we have to add acid to water but not water to acid. Explain? 2. What reaction will take place in our stomach when we take antacid tablet? 3. What is the role of pH in our digestive system? 4. Why do we get tooth decay? How to prevent it? 4 Marks 1. Explain the process of finding the pH of soil in your house? 2. Explain some daily life examples on the role of pH in our day to day life? 3. What do you mean by water of crystalliza- tion of salts? Explain it with an activity? 4. Karthik's hand was fractured while playing. His doctor made a bandage to his hand with a white powder, which was hardened after some time. i) What is that white powder? Write its chemical formula? ii) The powder was hardened when mixed with water. Write a chemical equation for this reaction? iii) Mention some other uses of that white powder? 5. REFRACTION OF LIGHT AT PLANE SURFACES IMPORTANT QUESTIONS 1 Mark 1. The refractive index of water is 1.33. What is its critical angle? A. n=1.33, C=3×108 m/sec n= c ⇒ v = nc v =1.33×3×108 =3.99×108 m/s n 2 Critical angle sin c = n 1 sin C = of refraction? 4. Observe the following table Substance Water Diamond Benzene Plint galss Kerosene Refracture index 1.33 2.42 1.50 1.65 1.44 i) Which of the above substances is optically denser? ii) Find the velocity of light in Benzene? iii) Find the velocity of light in water with respect to kerosene? 6. REFRACTION OF LIGHT AT CURVED SURFACES IMPORTANT QUESTIONS 1 Mark 1. Can we take the photograph of a virtual image? A. Yes, we can take the photograph of a virtual image 2. Draw the ray tracking through a concave lens? A. 3 × 108 = 0.7518 3.99 × 10 8 c = sin–1 (0.7518) c = 48.5o 2. Draw the ray diagram showing the refraction of light when it travels from denser to rarer medium? A. Normal Rarer medium 3. Velocity of light in air is 3,00,000 km/sec, and that of in diamond is 1,24,000 km/sec. Find the refractive index of diamond? A. Refractive index of diamond = Velocity of light in air Velocity of light in Diamond = 3,00,000 = 2.42 1, 24,000 3 10th Class Special- Physical Science Denser medium before a concave mirror, whose radius of curvature is 8 cm. Find the image distance? 4. Magnification of a concave mirror is –1. Then find i) Position of object and position of image ii) Characters of the image 5. An object of height 4cm is kept at a distance of 25 cm before a concave mirror, whose focal length is 15 cm. Find the image distance and characteristics of image. VýS$Æý‡$ÐéÆý‡… l íœ{ºÐ]lÇ l 18 l 2016 2 Marks 1. The critical angle of Benzene is 42o. Find the refractive index of Benzene? 2. Draw the ray diagram showing the refraction of light through a glass slab? 3. Explain the brilliance of diamond? 4. Why stars twinkle? explain? 4 Marks 1. Explain two daily life applications of total internal reflection? 2. Explain the formation of mirages? 3. Explain the process of experiment that you have conducted to find the relationship between angle of incidence and angle formed and to know the characteristics of images, when the object is placed at different positions before a convex lens. 2. Explain the activity that you have conducted to show that the focal length of a lens depends on adjacent medium. 3. An object is placed on the principle axis of a convex lens of focal length 20 cm. Draw ray diagrams to show the formation of image in the following situations. i) Object is placed at 50cm from the lens ii) Object is placed at 40 cm from the lens iii) Object is placed at 30 cm from the lens iv) Object is placed at 10 cm from the lens 4. Complete the following table (The lens used in convex lens) S. Position Position No. of object of Image Charecteristics of image Real/ Magni- Inverted/ Virtual fication erect 1. Infinite distance 2. 3. Virtual 4. In between F2 and C2 –1 7. HUMAN EYE AND COLOURFUL WORLD IMPORTANT QUESTIONS 3. Velocity of light in two media is V1 & V2. These two media are separated by a concave surface. Draw a ray diagram when the light ray passing from a medium with velocity of light V1 to another medium is which the velocity of light is V2, if V1 > V2 A. Rarer medium (v2) Denser medium (v2) C 2 Marks 1. An object is placed at a distance of 60 cm infront of a converging lens of focal length 20 cm. find the image distance and characteristics of image formed? 2. Find the refractive index of a symmetric, converging lens if the focal length and radius of curvature are equal. 3. When do a convex lens acts as a diverging lens? Give an example. 4. Lens formula is given as 1 1 1 = + . Is it f v u correct? Write the correct formula, if it is not correct? 5. Complete the following ray diagram and find the position of object. • • • • C1 F1 F2 C2 I I1 4 Marks 1. Draw ray diagrams to show the images 1 Mark 1. How do the rainbow appear to a person travelling in an aeroplane? A. Complete circle 2. Sekhar switched on the tube light at 12 mid night, but he could open his eyes hardly. What will be the reason for this? A. This happens due to the delay in the adjustment of eye lens to the light 3. Which part of the eye plays a key role in the adjustment of eye lens? A. Ciliary muscles 4. What will be the minimum distance between eye and an object so that one can see the object clearly? A. 25 cm 5. Mention any two daily life applications of scattering of light? A. Appearance of sky in red colour during morning and evening and white during noon. 2 Marks 1. Why do the sky appears blue? 2. How did you form rainbow in your class? 3. Why do sky appears white during noon time? 4. Doctor advised to a person, suffering from long sightedness to use a lens of focal A scale for measuring hydrogen ion concentration in a solution is clled PHscale. PH value of a solution is simply a number which indicates the acidic or basic nature of a solution. VýS$Æý‡$ÐéÆý‡… l íœ{ºÐ]lÇ l 18 l 2016 4 10th Class Special- Physical Science length 100cm. Find the least of distance of distinct vision and power of lens. 4 Marks 1. Explain the process of experiment that you have conducted to find the refractive index of prism? 2. If you want to know about the most common defects of vision and the remedies to control the defects, whom do you consult? What are the questions do you ask? Prepare a model table to record the information that you have collected? 3. Some aged people will suffer while reading or writing due to their defect in vision i) Which lens do you suggest to them? ii) If that person can see only nearer objects and cannot see far objects, show diagrammatically the defect and correction? 4. Explain the process of formation of rain bow? 5. Draw ray diagrams to show the hypermetropia and its correction? 8. STRUCTURE OF ATOM But Swathi corrected it i) Which rule did Swathi used to correct it? Write that rule? ii) Write the correct configuration? iii) Write the name of that element? 2. Mention Bohr's postulates based on Hydrogen spectrum? 3. The quantum numbers of a differentiating electron of an atom are n 3 l 2 ml ms O +1/2 i) What is the outermost shell of this element? ii) Write the electronic configuration of this element? iii) What is the valency of this element? iv) Write the name and atomic number of this element? 4. Discuss the reasons why Sommerfeld introduced elliptical orbits? IMPORTANT QUESTIONS IMPORTANT QUESTIONS 1 Mark 1. Write the Mendeleeff’s periodic law? A. The physical and chemical properties of elements are a periodic function of their atomic weights. 2. What is valency? A. Valency of an element was defined as the combining power of an element with respect to hydrogen. 3. Write the units of ionization energy? A. ev (or) Kcal / mole (or) KJ/mole 4. Write the formula proposed by Milliken to measure electro negativity. 4 Marks 1. The electronic configuration of an atom has been written by Anil as follows. 1s 2s 2px 2py 2pz i) Very stable ii) In group 2 of the periodic table iii) In group 16 of the periodic table iv) Highest electro negative? 5. a) What is a group in a periodic table? In which part of the group would you separately expect the elements to have i) Highest metallic character? ii) The largest atomic size? b) What are the advantages of the periodic table? 10. CHEMICAL BONDING 9. CLASSIFICATION OF ELEMENTS THE PERIODIC TABLE 1 Mark 1. What do you mean by nlx method? A. In nlx method, n represents principal quantum number (shell number), l represents angular momentum quantum number (orbital) and x represents the number of electrons in the orbital 2. Write the four quantum numbers of the differentiating electron in Sodium? A. The differentiating electron is 3S1. n = 3, l = 0, ml = 0, ms = + 1/2 3. The spin quantum number of an electron of an atom is –1/2. What do you mean by this? A. The spin of that electron is in anti clock wise direction. 4. What is the velocity of visible light in space? A. 3×108 m/sec 2 Marks 1. Draw the shape of electromagnetic spectrum? 2. "Emission or absorption of light spectrum is a collection of a group of wave lengths". Discuss this statement with the help of Planck's theory? 3. Write a notes on principal quantum number? 4. Draw the boundary pictures of 'S' and 'P' orbitals? 5. The wave length of a radio wave is 1m. Find its frequency. 6. What is an orbital? How is it different from Bohr's orbit? Hans Christian Oersted was one of the leading scientist of the 19th century, played a crucial role in understanding electromagnetism. The unit of magnetic field strength is named Oersted in his honour. Oersted was made a foreign member of the Royal Swedish Academy of Sciences in 1822. A. E.N = I.E + E.A 2 2 Marks 1. In Na and Na+, which has lowest atomic radius? Why? 2. Which group of elements are called halogen family? Why? 3. Write the following properties of an element with atomic number 12 i) Period number ii) Valence iii) Group number iv) Family of elements 4 Marks 1. Among the elements Cu, Zn, Ga, Ge, As i) Which element has highest atomic radius? ii) Which element has highest electro negativity? iii) Which element belongs to d-block? iv) For which element the metallic nature is more? 2. Discuss the position of Hydrogen in modern periodic table? 3. Define modern periodic law? Discuss the construction of Long form periodic table? 3. Consider the following elements. 20Ca, 8O, 18Ar, 16S, 4Be, 2He. Which of the above elements would you expect to be IMPORTANT QUESTIONS 1 Mark 1. Which defect of VSEPRT has been explained by valence bond theory? A. Bond energy 2. Draw the shape of NH3 and write its bond angle? A. N H H H ic number 6, 11 and 17 respectively. i) Which of these cannot form ionic bond? Why? ii) Which of these cannot form covalent bond? Why? iii) Which of these can form ionic as well as covalent bond? 4. Show the following with Lewis dot structure i) Bromine gas ii) Calcium Chloride iii) Carbon dioxide iv) Which molecule has a double bond in the above three? 5. Explain the formation of N2, based on valence bond theory? 11. ELECTRIC CURRENT IMPORTANT QUESTIONS 1 Mark 1. Let the resistance of our body is 100kΩ. If you touch a live wire of 240v, what is the amount of flow of current through your body? v 240 A. I = R ⇒ 100000 = 0.0024A 2. After completing the experiment to find the relation between V and I, Sekhar plotted a graph between the values of V and I. The shape of the graph is as follows what type of conductor has he taken? A. The wire taken by sekhar must be a semiconductor Y The N–H bond angle is 107o 481. 3. Represent H2O with Lewis dot structure? A. O H H 4. What is Hybridization? A. Hybridization is a phenomenon of intermixing of atomic orbitals of almost equal energy which are present in the outer shells of the atom and their reshuffling or redistribution into the same number of orbitals but with equal properties. 5. Write the electronic configuration of Be in its excited state? A. 1S2 2S1 2P1x I ↑ X →V 3. A wire of uniform cross section where resistance is 50Ω has cut into 5 equal parts and connected them in parallel. What is the equivalent resistance of the combination? A. If the wire of 50Ω resistance has cut into 5 equal parts, the resistance of each part is 10Ω when they are connected is parallel. 1 5 = R eq R R eq = R 10 ⇒ = 2Ω 5 5 4. Correct the adjacent circuit A 2 Marks 1. Draw a diagram to show that the formation of covalent bond by overlapping porbital of an element with S–orbital of another element? 2. Why do valence electrons involve in bond formation? Why not inner shell electrons? 3. Explain the formation of BeCl2 by Hybridization? 4. Which factors decide the type of bond formed between two atoms? 4 Marks 1. Explain the formation of NaCl and MgCl2 molecules? 2. Write the differences between ionic and covalent substances? 3. A, B and C are three elements with atom- V When light travels from one medium to another, its direction changes at the interface. The phenomenon of changing direction at the interface of the two media is known as refraction. Max Karl Ernst Ludwig Plank was a German theoretical physicist who originated quantum theory, which won him the Nobel Prize in Physics in 1918. Plank made many contributions to theoretical physics, but his fame rests primarily on his role an originator of the quantum theory? This theory revolutionized human understanding of atomic and subatomic processes. VýS$Æý‡$ÐéÆý‡… l íœ{ºÐ]lÇ l 18 l 2016 V A. • A 5. What is emf? A. emf can be defined as the work done by the chemical force to move unit positive charge from negative terminal to the positive terminal of the battery. A. Magnetic lines of force are in anticlock wise direction. Hence the current is in upward direction. i.e. outside perpendicular to the page. 2. The figure shows the direction of flow of current through a coil. Which pole will be induced on the upper part of the coil? 2 Marks 1. What is the equivalent resistance between A and B? R R R A R B R 2. Why do we use lead wire as a fuse wire? 3. A bulb is rated as 60w, 220v, and another bulb is rated as 100w, 220 v. Which bulb has more resistance? 4. The resistance of a conductor of length 1m and cross sectional area 0.1 mm is 100Ω, calculate its resistivity? 5. All conductors are not ohmic conductors. Justify your answer? 4 Marks 1. Write the procedure of the experiment that you have conducted to prove the ratio between potential difference and current? 2. Consider the following circuit 3Ω 6Ω 5Ω 8Ω R3 R4 5Ω R1 R2 9Ω 9Ω R7 R5 R6 A. North pole. 3. The magnetic field induction a uniform magnetic field is 2T. Find the magnetic flux passing through a plane of area. 1.5m2 which is perpendicular to the plane? A. B=2T, A = 1.5 m2 Magnetic flux φ = BA = 2T ×1.5 m2 ⇒ 3wb 4. What are the uses of drawing magnetic lines of force? A. We can find i) effect of magnetic field ii) direction of magnetic field 5. What are the characteristics of AC current? A. i) AC current changes its direction frequently ii)AC current consists fixed frequency. 2 Marks 1. A coil is kept perpendicular to the page at P, current flows into the page at Q. It comes out of the page as shown in the figure. What is the direction of magnetic field due to the coil? • Q X P 12v i) What is the equivalent resistance of R3, R4, R5 and R6? ii) If R1 R2 and R7 are 0Ω each, then what is the current through the remaining combination of resistors? iii) If an ammeter is connected in the circuit, what will be its reading? iv) What will be the current in the circuit if R3, R4, R5 and R6 are 0Ω each. 3. Your friend requires 10Ω resistance. He asked you. But you have the resistors of 40Ω only. i) How many resistors can you give to your friend? ii) How could he connect them? iii) Show that their equivalent resistance is 10Ω? 4. Describe an activity to show that the resistance of a conductor depends on its length? 12. ELECTROMAGNETISM IMPORTANT QUESTIONS 1 Mark 1. Magnetic lines around a conductor carrying current are shown in the diagram. What is direction of flow of current? 5 10th Class Special- Physical Science 2. The magnetic flux through a closed plane taken in a magnetic field is zero. How do you justify this? 3. Explain why the image in T.V. distorts when a magnet is brought near to the T.V. Screen? 4. Mention any two daily life applications of Faraday's laws of electromagnetic induction? 5. Kiran studied the following lines in a book. "The induced emf produce in a coil does not depend on the resistance of the coil". How can you say that the statement is true? 4 Marks 1. Compare the lines of force formed by a magnet and a solenoid through diagram and explain? 2. Let a particle of charge 'q' moving with a velocity V, perpendicular to a field of induction B. Find path of the charge, radius and time period? 3. Explain the working of electric motor with a neat diagram? 4. Find the force acting on a wire carrying current kept in a magnetic field? 5. Describe an experiment conducted by Faraday to show that a current is generated in the coil which is linked a magnetic flux in continuous motion? 13. PRINCIPLES OF METALLURGY A. Vinegar 4. What is the process of esterification reaction? A. Take 1 ml ethanol and 1 ml glacial acetic acid along with a few drops of conc H2SO4 in a test tube and heat it in a water bath. Add this to another beaker containing hot water. The resulting mixture gives a sweet smell. This is ester. IMPORTANT QUESTIONS 1 Mark 1. What are the main processes in refining? A. Distillation, poling, liquation, electrolytic refining. 2. What are the different stages in extraction of a metal from its ore? A. Concentration of ore, extraction of crude metal from the ore, purification of the crude metal. 3. What is the flux used to remove the impurity such as SiO2? A. SiO2 is an acidic nature substance. We have to use a basic nature substance like CaO to remove it. 4. What is smelting? A. Smelting is a pyrochemical process, in which the ore is mixed with flux and fuel and strongly heated. 2 Marks 1. Write the IUPAC name of 0 i) CH3 _ C_ CH2 _ CH2 _ CH2 _ CH2 _ CH2 _ OH H __ ii) H2C= C C __ C = CH2 Br 2 Marks 1. Explain a method of concentration of a sulphide ore? 2. Compare roasting and calcination? 3. Aluminium can be extracted from a lot of minerals but we use bauxite only as its ore. Explain with reasons? 4. Write the reactions taking place in Blast furnace? 5. Write a description of self reduction of sulphide ores? 4 Marks 1. Explain the process of experiment, to obtain zinc by electrolysis? 2. Draw a flow chart showing the different stages involved in extraction of a metal form its ore? 3. What is thermite process? Mention any two applications of this process in our daily life? 4. Describe an activity to show that the corrosion of metal requires moisture and air? 5. Draw a neat diagram of reverbaratory furnace and label it. 14. CARBON AND ITS COMPOUNDS CH2 H2 CH3 2. Explain micelle with a diagram? 3. Why do we burn Ethyne and Oxygen for welding, but not Ethyne and air? Explain? 4. Explain how graphite is used for writing on paper? 5. Why diamond is considered as hardest of all known substances? 4 Marks 1. Write the structural formula for the following compounds. i) 2- Bromo pentane ii) 2-Methyl propane iii) Butanol iv) 1- Hexyne 2. Explain the importance of esters in daily life? 3. Describe the cleansing action of soap with a neat diagram? 4. Write the IUPAC names of the following compounds i) An aldehyde formed from Ethane. ii) A ketone obtained from butane. iii) A chloride formed from propane. iv) An alcohol formed from pentane. 5. Explain the substitution reaction with an example? IMPORTANT QUESTIONS 1 Mark 1. What is the acid present in vinegar? A. Acetic acid or Ethanoic acid. 2. What is name of the compound formed when Ethanol is heated at 443K in the presence of conc. H2SO4? Write the equation? A. Ethane. CH 3CH 2OH 443K CH 2 = CH 2 + H 2O Conc.H 2SO 4 3. Which carboxylic acid is used as preservator? The arrangement of electrons in shells, sub-shells and orbitals in an atom is called the electron configuration. 6 Wohler Friedrich.. German chemist who was a student of Berzelius. In attempting to prepare ammonium cyanate from silver cyanide and ammonium chloride, he accidentally synthesized urea in 1828. This was the first organic synthesis, and shattered the vitalism theory. VýS$Æý‡$ÐéÆý‡… l íœ{ºÐ]lÇ l 18 l 2016 10th Class Special- Physical Science 1. HEAT 1. Why do solids expands on heating? a) kinetic energy of atoms increases b) potential energy of atoms increases c) total energy of atoms increases d) inter molecular distance increases 2. 2kg of water vapour at 1000C has condensed as water at 400C. What is the amount of heat released? b)1200 K.cal a) 600 K.cal d) 120 K.cal c) 60 K.cal l 3. Why do we use water in radiators of vehicles to cool them? a) specific heat capacity of water is more b) density of water is less c) water is abundantly available d) the temperature of water is very less 4. If an ice block at 00C is dropped in the water at 00C, then..? a) water also condenses b) ice block completely melts c) some part of ice block melts d) no change is observed 5. If water which is at room temperature is poured in a hole of an ice block, then? a) water changes as ice b) the temperature of water becomes 00C c) water will not condense d) b and c 6. The objects A, B and C are in thermal equilibrium. The temperature of A is 600C. Then the temperature of C is? a) 300C b) 450C c) 600C d) 00C 7. The temperature of a steel rod is 345k. Its temperature in 0C is? a) 720C b) 450C c) 6180C a) 700C 8. Which of the following is a warming process? a) evaporation b) boiling c) specific heat d) dew formation 9. Sweating is a process of? a) Condensation b) Cooling c) Evaporation d) Boiling 10. Latent heat of fusion of ice is? a) 540 Cal/gm b) 80 Cal/gm c) 100 Cal/gm d) 180 Cal/gm ANSWERS: 1) d; 2) b; 3) a; 4) d; 5) d; 6) c; 7) a; 8) b; 9) c; 10) b 2. CHEMICAL REACTIONS AND EQUATIONS 1. A gas is evolved when Calcium carbonate is heated. This gas puts off a burning match stick. This gas is? a) Carbondioxide b) Hydrogen c) Oxygen d) Nitrogen dioxide 2. C+O2→CO2+Q. This is an example of ___ reaction? a) Endothermic reaction b) Photochemical reaction c) Exothermic reaction d) Electrochemical reaction 3. Which of the following is an example of chemical double displacement? a) 2AgCl→2Ag+Cl2 b) 2Pb(NO3)2→2PbO+4NO2+O2 c) Zn+2AgNO3→Zn(NO3)2+2Ag d) Na2SO4+BaCl2→BaSo4+2NaCl 4. Copper powder which is shining in red colour changes into black copper oxide. This reaction is? a) Oxidation b) Reduction c) Photo chemical reaction d) Electro chemical reaction. 5. 2PbO+C→2Pb+CO2. Which of the following is correct, based on the equation? a) Led is reduced b) CO2 is oxidised c) Carbon is oxidised d) Led oxide is oxidised 6. If Iron dust is added to diluted HCl, then? a) Iron chloride is formed and H2 gas is liberated b) Iron oxide is formed and chlorine gas is liberated c) No reaction takes place d) Iron salt and water are formed 7. Number of atoms in 2 grams of Hydrogen are b) 3.01×1023 a) 6.02×1023 c) 12.04×1023 d) 6.02×10−23 8. AgNO3+NaCl→NaNO3+AgCl↓. This is an example for ____ reaction a) Gas is evolved b) Exothermic reaction c) Endothermic reaction d) Precipitation is formed 9. Which of the following is a balanced equation? a) C3H8+O2→CO2 +H2O b) Fe2O3+2Al→2Fe +Al2O3 c) Na+H2O→NaOH +H2↑ d) Zn+AgNO3→Zn(NO3)2+Ag 10. Which of the following gas is used as a bleaching agent? b) H2 c) CO2 d) Cl2 a) O2 ANSWERS: 1) a; 2) c; 3) d; 4) a; 5) a; 6) a; 7) a; 8) d; 9) b; 10) d 3. REFLECTION OF LIGHT BY DIFFERENT SURFACES 1. A concave mirror, a screen and an object are arranged such that the height of image is double that of the object. Then the screen and object are moved to get a the triple magnified image. In this case the screen is moved by 25cm. Find the focal length of the mirror? a) 5cm b) 16.6cm c) 25cm d) 7.5cm 2. A concave mirror whose focal length 'f' forms an image equal in height to the object. Then the object distance from the mirror is? a) f b) f/2 c) 2f d) 4f 3. If the magnification is 1,then the image is? a) equal to height of the object b) erected image c) a & b d) given data is insufficient 4. The ray which is passing through focus of a concave mirror, after reflection passes? a) through focus b) parallel to principal axis c) through centre of curvature d) through pole 5. An object is placed at a distance of 10cm infront of a concave mirror of focal length 20 cm. Then the image is? a) diminished, erect and virtual 6. 7. 8. 9. 10. b) enlarged, erect and virtual c) diminished, inverted and real d) enlarged, inverted and real. Which of the following letter appears as it is in a plane mirror? a) A b) M c) O d) L If you move an object towards your eye from the surface of a plane mirror, then the size of image? a) increases b) decreases c) does not change d) disappears The radius of curvature of a concave mirror is 1m. If a ray from an object at infinite distance falls on the mirror, then the image is formed at? a) 0.5m b) 1m c) 2m d) 0.25m Which of the following is a diverging lens? a) plane mirror b) concave mirror c) convex mirror d) parabolic mirror The distance between pole and centre of curvature of a mirror is A and the distance between pole and principle focus is B. The relation between A and B is a) A=2B b) B=2A c) A=B/2 d) B=3A ANSWERS: 1) c: 2) c; 3) c; 4) b; 5) b; 6) c; 7) b; 8) a; 9) c; 10) a 4. ACIDS, BASES AND SALTS 1. A substance produced H3O+ ions in its aqueous solution. The substance is? a) acid b) base c) neutral substance d) having both acid and basic nature. 2. The colour of methy l orange when added to aqueous solution of sodium hydroxide is? a) Red b) Pink c) Yellow d) No change 3. When a colourless solution is added to a metal bicarbonate CO2 gas is evolved. The colourless solution is? a) base b) Acid c) Neutral solution d) can't say 4. Which of the following is an alkali? a) NaOH b) KOH d) Be (OH)2 c) Mg(OH)2 5. The acid which is left by bee sting is? a) Methanoic acid b) Tartaric acid c) Hydrochloric acid d) Citric acid 6. Which of the following is not a salt? a) Sodium chloride b) Quick lime c) Zinc nitrate d) Lead phosphate 7. The aqueous solution of sodium bicarbonate? a) changes blue litmus to red b) changes methyl orange to yellow c) changes phenophthalene to pink d) changes methyl orange to red 8. The strength of acid depends on? a) concentration of acid b) concentration of H+ c) concentration of OH− d) no. of moles of base used to neutralize ions 9. The concentration of H+ ions is 10×10−4 Mole/liter. The pH of the solution is? a) 1 b) 2 c) 3 d) 4 10. Which of the following pair gives common salt? a) Sodium Thio sulphate, Sulphur dioxide b) Hydrochloric acid, Sodium hydroxide c) Chlorine and oxygen d) Nitric acid and sodium hydrogen carbonate ANSWERS: 1) a; 2) c; 3) b; 4) d; 5) a; 6) b; 7) b; 8) b; 9) c; 10) b 5. REFRACTION OF LIGHT AT PLANE SURFACES 1. The coin in a beaker of water seems to be appeared above its original place, due to? a) refraction b) reflection c) rectilinear motion of light d) dispersion of light 2. To observe total internal reflection, light must? a) travel from rarer medium to denser medium b) travel from denser medium to rarer medium c) travel from rarer medium to rarer medium d) travel from denser medium to denser medium 3. Which of the following is an application of total internal reflection? a) formation of mirage b) shining of a diamond c) twinkling of stars d) all the above 4. The distance between the incident ray and emerging ray, when light travels from a glass slab is called? a) Parallel shift b) Lateral shift c) Vertical shift d) Refractive index 5. Refractive index does not depend on? a) nature of substance b) wave length c) density of substance d) none of the above 6. 'The refractive index of a medium is not uniform through out the medium' The best example which supports the statement is? a) shining of a diamond b) twinkling of the stars c) mirage formation d) formation of rainbow 7. Which of the following is not Snell's law? sin i n 2 = b) a) n1sin i=n2sin r sin r n 1 c) sin i n 1 sin i = = constant d) sin r n 2 sin r 8. ____ gives us an idea of how fast or how slow light travels in a medium. a) critical angle b) refractive index c) density d) shift Modern periodic law: The physical and chemical properties of the elements are the periodic functions of their Atomic configurations. Linus Pauling.. The world's one of the greatest scientists and a great humanist. He was acknowledged as the most influential chemist. He is the only person ever to receive two unshared Nobel Prizes- for Chemistry (1954) and for Peace (1962). 9. Which of the following shows the context when light travels from denser to rarer medium? a) b) c) d) 10. The critical angle of Benzene is 420. Its refractive index is? a) 1.33 b) 1.63 c) 2.42 d) 1.51 ANSWERS: 1) a; 2) a; 3) d; 4) b; 5) c; 6) c; 7) d; 8) b; 9) b; 10) d 6. REFRACTION OF LIGHT AT CURVED SURFACES 1. A magician kept a lens whose refractive index is 1.47 in a beaker and poured a liquid in it. He observed that the lens has disappeared. What will be the liquid? a) water b) turpentine c) kerosene d) oil 2. A lens of refractive index n2 is kept in a medium of refractive index n1. The focal length of the lens (f) is? 1 a) fα (n +n ) 2 1 b) f α(n2+n1) 1 c) f α (n − n ) 2 1 d) f α (n2−n1) 3. If three lenses are kept in contact the resultant focal length is 12cm. If a lens of focal length of f3 is removed from this arrangements, the resultant focal length is 60/7 c.m. The third lens is? a) Convergent lens with f=30 c.m. b) Convergent lens with f=60 c.m. c) Divergent lens with f=30 c.m. d) Divergent lens with f=60 c.m. 4. Find the focal length of lens. Whose refractive index is 1.5 and the radius of curvature of two surfaces is equal and it is 0.04 m? a) 0.04 m b) 0.4m c) 4m d) 40m 5. In which context, the image distance is equal to focal length of a lens? a) when the rays are passing through pole b) when the rays are passing parallel to principal axis c) when the rays are passing through focus d) All the above 6. The location of the object when seeing through a microscope is? a) At principal focus b) At the radius of curvature of the lens c) In between focus and pole d) In between focus and radius of curvature 7. The image which we can see through our eye without screen is? a) virtual image b) real image c) erect image d) inverted image 8. The rays which are passing very near to principal axis are known as? a) Incident rays b) emerging rays c) paraxial rays d) refracted rays 9. What is the lens shown in the figure? a) double convex c) double concave b) plano convex d) plano concave 10. The focal length of a lens depends on? a) medium b) the substance with which the lenses made c) position of object d) a and b ANSWERS: 1) b; 2) c; 3) c; 4) a; 5) b; 6) c; 7) a; 8) c; 9) b; 10) d. 7. HUMAN EYE AND COLOURFUL WORLD 1. The intensity of light will be detected by? a) rods b) cones c) ciliary muscles d) aqueous humour 2. The lens to be used to correct the eye defect in the following figure is? H L a) concave b) convex c) bifocal d) plano convex 3. The refractive index of a prism is? A Sin 2 a) n = A+D Sin    2  b) n = Sin A Sin(A + D) D  Sin  A +  2  c) n = A Sin   2 A+D Sin    2  d) n = A Sin   2 4. The original shape of Rainbow is? a) semi circle b) circular c) three dimensional cone d) three dimensional sphere 5. The application of scattering of light is? a) blue colour sky b) red colour of sun during evening c) white colour of sun during afternoon d) All the above 6. A ray which is incident on a prism with an incident angle 400 has emerged with an angle equal to the angle of minimum deviation. Find the angle of incidence on the second surface of the prism? b) 00 c) 400 d) 200 a) 900 7. The refractive index of a prism with A=600 is √2. The angle of incidence required such that the ray must refract with an angle equal to angle of minimum deviation is? b) 600 c) 750 d) 450 a) 300 8. Blue colour of sky is due to the presence of ____ molecules in atmosphere? b) O2 c) water d) All a) N2 9. The decreasing order of wave length of light due to dispersion of light is? a) VIBGYOR b) BGYORIV c) ROYGBIV d) ROGYBVI 10. The relation between power of lens (p) and focal length (f) is? b) 2p=f a) p=f d) p=1/f c) 2f=p VýS$Æý‡$ÐéÆý‡… l íœ{ºÐ]lÇ l 18 l 2016 10th Class Special- Physical Science ANSWERS: 1) b; 2) b; 3) c; 4) c; 5) d; 6) c; 7) d; 8) d; 9) c; 10) d. 8. STRUCTURE OF ATOM 1. Units of Planck's constant? a) Force × time b) Energy × distance c) Energy× time d) Energy/time 2. The frequency of a green light is 6×1014Hz. Its wave length is? b) 0.2×107m a) 0.5×10&6m d) 2×106m c) 5×10&6m 3. Which of the following cannot be explained with the help of Bohr's model? d) Li2+ a) H b) Be c) He+ 4. Which of the following is not true with respect to electron? a) Negatively charged electrons will always be attracted by positively charged nucleus due to electrostatic forces. b) The potential energy of electrons which are far away from nucleus is more c) The potential energy of electrons which are far away from nucleus is more d) All the electrons will come out from a substance when they are heated. 5. Which of the following is a wrong set of the quantum numbers? b) 3, 2, 1, +1/2 a) 3, 1, 0, &1/2 c) 3, 1, 2, &1/2 d) 3, 2, 0, +1/2 6. The correct form of order of orbitals according to their energy levels is? a) 3d, 4p, 4s, 4d, 5s b) 3d, 4s, 4p, 4d, 5s c) 4s, 3d, 4p, 5s, 4d d) 5s, 4p, 3d, 4d, 4s 7. The magnetic quantum number of an electron is &1 and its spin quantum number is +1/2. Find the orbital in which the electron does not exist? a) s b) p c) d d) f 8. The principle quantum number of an orbit in which we can accommodate a maximum of 18 electrons is? a) 1 b) 2 c) 3 d) 4 9. The 'l' value of the orbital whose magnetic quantum numbers are from &2 to +2 is? a) 0 b) 2 c) 3 d) 1 10. Electronic configuration of chromium is a) 1s22s22p63s23p64s23d4 b) 1s22s22p63s23p64s13d5 c) 1s22s22p63s23p64s23d9 d) 1s22s22p63s23p64s13d10 ANSWERS: 1) c; 2) a; 3) b; 4) d; 5) c; 6) c; 7) a; 8) c; 9) b; 10) b 9. CLASSIFICATION OF ELEMENTS – THE PERIODIC TABLE 1. The electronic configuration of an element is 1s22s22p63s2 3p1. Then it is a? a) Inert gas b) Transition element c) Inner transition element d) Representative element 2. The first I.E. and electron affinity of silicon are 785 KJ/mole and 135 KJ/mole respectively. The electro negativity is? c) 1.69 d) 325 a) 786.08 b) 460 3. Which of the following cations has less atomic size? 7 b) Mg2+ c) Ca2+ d) Al3+ a) Na+ Observe the following table (4-7) Element Atomic number K 19 Ca 20 Sr 38 Mn 25 Fe 26 Zn 30 4. Which element has highest atomic radius? a) K b) Zn c) Mn d) Sr 5. Which element has higher metallic property? a) K b) Ca c) Mn d) Sr 6. The element which belongs to 2nd group (Group IIA)? a) K b)Ca c) Fe d) Mn 7. In the above table, the metal with basic nature is? a) Zn b) Sr c) K d) Ca 8. Which of the following metal has highest reactivity? a) Li b) Na c) K d) Rb 9. The element with electronic configuration 2, 8, 1 is similar in chemical properties of? a) Nitrogen b) Fluorine c) Phosphorous d) Argon 10. The atomic number of the 'Mendelevium' which is named as an honour of Mendeleef is? a) 100 b) 105 c) 109 d) 101 ANSWERS: 1) d; 2) b; 3) d; 4) d; 5) d; 6) b; 7) c; 8) d; 9) b; 10) d 10. CHEMICAL BONDING 1. Which of the following is a conductor? a) Diamond b) Sulphur in liquid state c) KCl in liquid state d) crystal of NaCl 2. The electronic configuration of four elements K, L, M, N are K = 1s22s22p1; L = 1s22s22p6; M=1s22s22p4; N = 1s22s22p3. Which of these can form a double bond? a) K b) L c) M d) N 3. An element A forms a compound ACl4. The number of valence electrons in A is? a) 1 b) 2 c) 3 d) 4 4. Which of the following can form a strong covalent bond? b) O2 c) N2 d) none a) H2 5. According to VSEPRT, the middle atom of the molecule AB3 is left with a lone pair of electrons. Then the shape AB3 molecule is? a) pyramidal b) Quadrant The process of re-emission of absorbed light in all directions with different intensities by atoms or molecules, is called scattering of light. Q. The process of converting starch and sugars in to ethyl alcohols is known as a) Fermentation b)Esterification c) Saponification d) Combustion Answer. a) Fermentation VýS$Æý‡$ÐéÆý‡… l íœ{ºÐ]lÇ l 18 l 2016 8 10th Class Special- Physical Science c) Planar triangular d) linear 6. The bond between Cs and F in the molecule CsF is? a) Ionic b) Metallic c) Covalent d) Coordinate covalent 7. Hybridization is useful to know the ____ of a molecule? a) activity b) shape c) isomers d) bond distances 8. X is an element belongs to s-block. Y is a chalkogen with high electro negativity? The bond formed between X and Y is a) metallic bond b) covalent bond c) electron pair bond d) static electric bond 9. Favourable conditions to form an ion are? a) less I.E b) Less atomic radius c) low electro negativity d) high atomic radius 10. The persons related to VSEPRT? i) Sidgiwick ii) Powell iii) Gillespie iv) Nyholm a) i, ii b) ii, iii c) iii, iv d) i, ii, iii, iv ANSWERS: 1) c; 2) c; 3) d; 4) c; 5) a; 6) a; 7) b; 8) d; 9) b; 10) d 11. ELECTRIC CURRENT 1. The resistances of two substances A and B are RA and RB such that RA<RB. If their specific resistances are SA and SB, then a) SA>SB b) SA=SB c) SA<SB d) We cannot establish a relation between SA and SB 2. The resultant resistance between A and B is? A R R R R b) Voltmeter is connected in parallel and Ammeter is connected in series to the battery c) Both the voltmeter and ammeter are connected in parallel to the battery d) Both the voltmeter and ammeter are connected in series to the battery 6. Which is related to a battery in a circuit? a) battery supplies electrons to the circuit b) battery pushes the electrons towards high potential c) battery pushes the electrons towards low potential d) battery accelerates the electrons to get high velocity. 7. A wire of 36Ω is cut in to 'n' parts and each part is connected in parallel. The effective resistance of the combination is 1Ω. Then the value of 'n' is? a) 8 b) 5 c) 6 d) 7 8. The value of current I in the figure is? a) R/2 b) R c) 2R d) 4R 3. If a resistor is connected to a battery its temperature increases, but which of the following does not change a) drift velocity of electrons b) Specific resistance c) Resistance d) density of electrons 4. Student: What happens to the resistance of a resistor when temperature increased. Teacher: The resistance decreases when temperature increases. Which of the following explanation supports above discussion a) The density of electrons increases with temperature b) The charge on every electron increases. c) The mass of every electron increases d) number of collisions will increase. 5. Which of the following is a correct explanation for the following diagram v v a) Voltmeter is connected in series and Ammeter is connected in parallel to the battery 7. 8. 9. a) 9A b) 13A c) 18A d) 12A 9. Coulomb/sec = ? a) Ampere b) Volt c) Ohm d) Watt 10. Observe the following statements? P: Electricity passes through every appliance when connected in series. Q: The potential difference will be same on every appliance when connected in parallel a) Both are true b) P is true but Q is false c) P is false but Q is true d) Both are false a) North b) South c) East d) West 10. Which of the following is an application of Faraday's law of electromagnetic induction? a) Metal detector b) ATM card c) Induction stove d) All the above ANSWERS: 1) d; 2) c; 3) d; 4) d; 5) b; 6) c; 7) c; 8) b; 9) a; 10)a 1. Galena is an ore of? a) Al b) Hg c) Pb d) Zn 2. The suitable method to remove gangue from the sulphide ore is? a) Froath floatation b) Hand picking c) washing in water d) magnetic separation 3. Fe2O3+2Al →2Fe+Al2O3+energy. This reaction shows? a) Distillation b) Thermite process c) Calcination d) Roasting 4. The formula of gypsum ___? b) CaSO4. 2H2O a) CuSO4. 2H2O c) CuSO4. 1/2H2O d) CaSO4. 1/2H2O 5. The ore is undergone ___ in smelting? a) Oxidation b) Reduction c) Neutralization d) None 6. Which of the following is an ore of carbonate form? a) Magnacite b) Bauxite c) Gypsum d) Galena 7. The process of heating ore in the absence of oxygen is known as? a) Roasting b) Smelting c) Distillation d) Calcination 8. The impurities present in crude ore is known as? a) Gangue b) Flux c) Slag d) Mineral 9. The furnace used to get iron from Hematite? a) Reverbaratory furnace B R 6. kept perpendicular to the uniform magnetic field is? a) F=lB b) F=IlB c) B=IlF d) F=Il/B The scientist who worked alot to understand electromagnetism is? a) Newton b) Ampere c) Oersted d) Pauling A proton of mass 1.6 × 10&27Kg enters in to a magnetic field of 3T with a velocity of 107 m/sec, making an angle of 300 with the field. The force acting on the proton is? b) 4.0×10&12 N a) 2.4×10&12 N &12 d) 1.6×10&12 N c) 3.2×10 N The device which converts mechanical energy in the coil denotes direction of electricity? a) Electric motor b) Generator c) Solenoid d) Galvanometer The ___ pole is induced on the surface, if the arrow marks in the coil denotes direction of elecricity? 12. ELECTROMAGNETISM 1. What did you observe in the experiment to observe the direction of force when magnetic field is applied on a current carrying conductor? a) The wire moved towards the north pole of the magnet b) The wire moved towards the south pole of the magnet c) The wire donot move d) The wire moved by following right hand thumb rule. 2. AC is more comfortable than DC in transmission of electricity, because? a) AC can be rectified b) AC can be easily produced c) We can use this conductors d) This is safe 3. The maximum value of electricity of a A.C is 5A. Then its rms value is? a) 5 A 2 b) 2 A 5 c) 5 2A d) 5Α 4. Faraday's law of the electromagnetic induction is? b) ε =∆φ. ∆t a) ε = ∆t / ∆φ d) ε = ∆φ&∆t c) ε = ∆φ/ ∆t 5. The force acting on a wire carrying current ANSWERS: 1) d; 2) a; 3) a; 4) c; 5) b; 6) c; 7) a; 8) b; 9) a; 10) d 13. PRINCIPLES OF METALLURGY b) Retort furnace c) Blast furnace d) magnetic separation mission 10. The chemical formula of rust is? b) Fe2O3. XH2O a) Fe2O3 c) Fe d) FeO ANSWERS: 1) c; 2) a; 3) b; 4) b; 5) b; 6) a; 7) d; 8) a; 9) c; 10) b 14. CARBON AND ITS COMPOUNDS 1. Which of the following is an acetic acid? a) A liquid with sweet smell b) A liquid with pungent smell c) A smell less liquid d) A liquid with bad smell 2. A homologous series is given below. Identify the next element in this series CH3OH;C2H5OH;C3H7OH,.... b) C4H9OH a) C5H11OH c) a &b d) none 3. 2ml of Ethanoic acid is taken in 3 beakers A, B and C and water is added to each test tube at 2ml, 4ml and 6ml each. Which test tube will form a clear fluid? a) only in A b) only in A and B c) only in B and C d) in all test tubes 4. The process of converting starch and sugars into ethyl alcohols is known as? a) Fermentation b) Esterification c) Saponification d) Combustion 5. Soap solution is a ____ solution? a) colloidal b) true c) suspension d) acidic 6. Aldehyde is denoted by? a) ol b) Al c) one d) ene 7. The concept of the Hybridization of orbitals is introduced by? a) Rutherford b) Neil's Bohr c) Broglie d) Linus Pauling 8. sp2 Hybridization can be observed in? b) HC ≡ CH a) CH2=CH2 d) carbon c) CH4 9. The role of ___ is under study in the manufacturing of medicines to remove cancer cells such as melanoma? a) Nano tubes b) Fullerins c) Diamond d) Graphite 10. ___ is obtained when Ammonium cyanate is heated? a) Graphene b) Ethanol c) Urea d) Acetaldehyde ANSWERS: 1) a; 2) c; 3) d; 4) a; 5 b; 6) b; 7) d; 8) a; 9) b; 10) c Physical methods adopted in dressing the ore are: hand picking, washing, froth flotation, Magnetic separation etc. Q. A sweet odour substance formed by the reactor of an alcohol and a carboxylic and is? Answer. Ester There are NO Fill in the Blanks in question paper. BUT, this BIT BANK is useful to answer One, Two mark or ANY type of questions. 1. HEAT 1. Specific heat S = ? 2. Boiling point of water is ____Cº 3. Latent heat of vaporization of water is ____. 4. The process of converting solid into liquid is called ____. 5. The amount of a water vapour present in air is called____. 6. _____ is the reverse process of evaporation. ANSWERS  Q  1)  ; 2) 100; 3) 540 cal/gm;  m∆T  4) melting; 5) Humidity; 6) condensation. 2. CHEMICAL REACTIONS AND EQUATIONS 1. The reaction 2N2O → 2N2 + O2 is an example for ____ reaction. 2. The decomposition of vegetables into compost is an example of ____ reaction. 3. Rancidity is an ____ reaction. 4. ____ chemical reaction is involved in the corrosion of iron. 5. By painting we can prevent ____. ANSWERS 1. Magnification produced by a convex mirror is ____. 2. If magnification m is >1 than the size of the image is ____. 3. The distance between pole and focus is ____. 4. Mirror formula is ____. 5. Light chooses the path which takes the least time to travel. This is called____ principle. ANSWERS 1) less than 1; 2) Big; 3) Focal length;  1 1 1 = +  ; 5) Fermat  f u v 4)  10th Class Special- Physical Science Bit B a n k mula ____. 5. The acid forms in stomach is ____. 6. Many salts absorb water from atmosphere this property is called ____. ANSWERS 2. The formula for no. of electrons in a shell is ____. 3. The subshell of the orbital for l = 1 is ____. 4. ____is a group of wavelength. 5. Splitting of spectral lines due to magnetic field is called____. 1) 1-14; 2) Hydrochloric acid; 3) Antacid; 4) CaOCl2; 5) HCl; 6) Crystallisation ANSWERS 1) Degenerate orbitals; 2) 2n2; 3) p; 4) spectrum; 5) Zeeman effect 1. At critical angle of incidence, the angle of refraction is ____ 2. Light travelling along a normal is ____ refracted 3. ____is the basic principle of optical fibre. 4. The unit of refractive index is ____. 5. The angle of refraction for critical angles is ____. 9. CLASSIFICATION OF ELEMENTS – THE PERIODIC TABLE 1. 2. 3. 4. 5. ANSWERS 1) 90º; 2) not; 3) Total internal reflection; 4) No units; 5) 90º 1A group elements are called ____. Inner transition elements are called ____. Father of periodic table____. Atomic radius is measured in ____units. Noble gases belongs to ____ group of periodic table. ANSWERS 1) Alkalimetals; 2) ƒ Block elements; 3) Mendeleeff; 4) Aº; 5) 18th 6. REFRACTION OF LIGHT AT CURVED SURFACES 1. S.I Unit of the power of a lens is____. 2. The power of a concave lens is____. 3. Focal length of a convex lens is ____ when it is kept in water. 4. Lens formula is given by____. 5. Lens maker formula is ____. 10. CHEMICAL BONDING ANSWERS 1) dioptre; 2) negative; 3) increases; ANSWERS 1  1 1   1 1 1 = −  ; 5)  = (n − 1) −   ; f f v u  R1 R 2      7. HUMAN EYE AND COLOURFUL WORLD 1. The intensity of light maximum at ____ in scattering of light. 2. The distance between the eyes lens and retina is about____. 3. The maximum focal length of the eye lens is about____. 4. Myopia can be corrected by using ____ lens. 5. Hyper metropia can be corrected by using ____ lens. 1. 2. 3. 4. 5. 1) FCC Latric crystalline structure; 2) H2O; 3) Linear; 4) Metallic character; 5) Linus Pauling; 6) Pyramidal 11. ELECTRIC CURRENT 1. 1KWH: ____ Joules 2. An electronic instrument is used in measuring electric current and electric resistance is ____. 3. Units of resistance____. 4. The surface of earth is taken to be at ____ potential. 5. Kirchoff’s loop law is based on the conservation of____. 6. Voltmeter is always connected in____ in a circuit. ANSWERS ANSWERS 4. ACIDS, BASES AND SALTS 1. Range of pH scale ____. 2. During digestion stomach produces ____. 3. ____ medicine is used for treating indigestion. 4. Bleaching powder is represented by for- 1) 90º; 2) 2.5 cms; 3) 2.27 cms; 4) concave; 5) convex 1) 3.6 x 105; 2) multimeter; 3) Ohm; 4) Zero; 5) energy; 6) parallel 8. STRUCTURE OF ATOM 1. The orbitals which have same energy are called ____. 3. 4. 5. 9 wire placed in uniform magnetic field of the wire is oriented θ angle to magnetic field is ____. The magnetic force on a current carrying wire places in uniform magnetic field if the wire is oriented parallel to magnetic field is ____. The device used for producing electric current is called ____. Unit of magnetic flux____. A metallic wire carrying an electric current is associated with it’s a____. A current that flows in the same direction is____. ANSWERS 1) ILB sinθ; 2) 0; 3) Generator; 4) Weber.; 5) magnetic field; 6) direct 13. PRINCIPLES OF METALLURGY 1. Formula of pyrolusite ____. 2. Arrange Ag, Mg, K in activity series ____. 3. The purpose of smelting an ore is to ____ It. 4. The formula of rust ____. 5. Smelting is carried out in____furnace. 6. The new substance added to ore to remove gangue is called____. ANSWERS NaCl is said to possess ____. Example for polar solvents is ____. The shape of BeCl2 is ____. Electro positivity is also called as ____. Valence bond theory was proposed by ____. 6. The shape of NH3 is ____. 4)  2. 6. 5. REFRACTION OF LIGHT AT PLANE SURFACES 1) Chemical decomposition; 2) Oxidation; 3) oxidation; 4) Oxidation; 5) corrosion 3. REFLECTION OF LIGHT BY DIFFERENT SURFACES VýS$Æý‡$ÐéÆý‡… l íœ{ºÐ]lÇ l 18 l 2016 12. ELECTROMAGNETISM 1. The magnetic force on a current carring 1) MnO2; 2) K>Mg>Ag; 3) reduce; 4) Fe2O3XH2O; 5) Blast; 6) flux 14. CARBON AND ITS COMPOUNDS 1. The hydrocarbon that contain –OH group are called ____ 2. Allotropes forms due to the difference in the ____ 3. Soaps are the alkali salts of____. 4. Number of single covalent bonds in ammonia are____. 5. Sodium lauryl sulphate is an example of ____. 6. A sweet odour substance formed by the reactor of an alcohol and a carboxylic acid is____. ANSWERS 1) Alcohols; 2) arrangements atoms; 3) Higher fatty acids); 4) Three; 5) Synthetic detergent; 6) Ester Carbon compounds with identical molecular formula but different structures are called structural isomers. 10 ◆ ◆ VýS$Æý‡$ÐéÆý‡… l íœ{ºÐ]lÇ l 18 l 2016 10th Class Special- Physical Science ◆ Special properties of carbon Carbon - Hybridisation: - Sp Hybridisation - Sp2 Hybridisation - Sp3 Hybridisation. Preparation and properties of carbon compounds Chapter Wise Key Concepts 1 Heat Heat Temperature Thermal equilibrium Specific heat:- Factors effecting specific heat - Applications of specific heat capacity in our daily lilfe. - To find the specific heat of solids and liquids. Method of mixtures Evaporation Condensation ◆ Fog and dew Humidity ◆ Melting Boiling Latent heat of vaporization Latent heat of fusion Freezing. ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ 2 Chemical reactions and equations 5 Refraction Rarer and denser media Refractive index Relative refractive index Snells law Total internal reflection ◆ ◆ ◆ ◆ ◆ ◆ 6 ◆ ◆ ◆ Curved serface: - Concave surface - Convex surface Refraction of light at concave and convex surfaces Refraction of light through denser to rarer and rarer to denser at curved surfaces and thier ray diagrams. Lonses Formation of images through convexlens and thier ray diagrams Lens formula and lens makers formula. ◆ ◆ ◆ ◆ ◆ Least distance and distant vision Angle of illusion General defects of vision power of lens Daily life applications of scattering of light ◆ ◆ ◆ ◆ Reflection of light by different surfaces Human eye and colourful world 10 Chemical Bonding Structure of atom Why do atoms combine Lewis electron dot structure Valency electron theory ◆ Ionic bond Formation of NaCl, MgCl2, Na2O and AlCl3 molecules. Valence shell electron pair repulsion theory (VSEPRT) Bond angle according to VSEPRT. Hybridization. Formation of BeCl2, BF3, NH3 and H2O molecules by hybridization. Differences between ionic and covalent substances ◆ ◆ ◆ ◆ ◆ ◆ ◆ 11 ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ Reflection of light Laws of reflection Formation of image and its characteristics through a plane mirror. Spherical mirrors:- Concave mirrors Convex mirrors. Formation of image and its characteristics through a concave mirror Rules for drawing ray diagrams Rules for drawing ray diagrams Mirrors formula Sign convention to be followed while using mirror formula. ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ 4 ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ Acids, Bases and salts Reactions of acids, and bases with indicators. Chemical reactions of acids and bases: Reaction with metals - Reaction with metal carbonates and metal hydrogen carbonates. Neutralization Propertus of acids Propertus of bases PH value and PH scale PH in our daily life Salts:- Sodium chloride - Soduium hydroxide - Bleaching powder - Sodium Carbonate - Sodium bi carbonate - Plaster of paris. Water of crystalization. Spectrum Wave nature of light Electromagnetic spectrum Bohr's model of hydrogen atom and its limitations. Quantum mechanical model of atom. Quantum numbers:- Principal quantum number - Angular momentum qunatum number. Magnetic quatum number. Spin quantum number. Electronic configuration:- Aufbau rule Hund's rule - Pauli's exclusion - Principle. ◆ 9 ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ ◆ Electromagnetism - Oersted's experiment Magnetic field 13 Magnetic flux Magnetic flux density Magnetic lines of force Magnetic field due to electric current Magnetic field due to staraight wire carrying current. Magnetic field due to circular coil Magnetic field due to solenoid Magnetic force on moving charge and current carrying wire Electric motor Electromagnetic induction - Faraday's laws Induced emf - Lenz's law Applications of electromagnetic induction Generator. 14 Electromagnetism ◆ Carbon and its Compounds Special properties of carbon Carbon - Hypridisation: - Sp Hybridisation - Sp2 Hybridisation - Sp3 Hybridisation. Allotropes of carbon:- Diamond - Graphite - Buckminister pullerin - Nano tubes Nature of carbon:- Catanation - Allotropy - Formation of multiple bands Hydrocarbons: - Saturated Hydrocarbons - Alkanes - Unsaturated Hydro carbons Alkens - Alkynes Functional groups Nomen Nomeclature of carbon compounds Chemical properties of carbon compounds Combustion reactions, oxidetion reactions, addition reactions, substitution reactions Preparation and properties of carbon compounds - Ethanol Ethanoic acid Esterification Soaps, saponification. Principles of Metallurgy Ore Concentration of ore Classification of elements the periodic table Necessity of classifications Dobereiner triads Newlands law of octaves Mendeleev's classification:- postulates Limitations Modern periodic table (Long form periodic table) Arrangement of elements in groups and periods. Properties of elements and their trends in groups and periods. Valence Atomic radius Ionization energy Electron affinity ◆ ◆ 12 by Extraction of crude metal from the ore metals of high reactivity ◆ ◆ Electric current Electric current (Lorenz - Drude theory) Potential difference Working of a battery Electromotive force (emf) Relation between current and potential difference - ohm's law Electric shock Resistance Factors influencing resistance of a substance Electric circuit Series combination of resistors Parallel combinatio of resistors Kirchoff laws:- Junction law - Loop law Electric power House hold electric consumption, overload, use of fuse. ◆ ◆ ◆ ◆ ◆ ◆ ◆ 8 ◆ ◆ ◆ 7 ◆ 3 Reflection of light at Curved surfaces Electronegativity. ◆ ◆ ◆ Chemical equations:- Writing a chemical equation - Balancing a chemical equation - Other information given by a chemical reaction. Chemical reactions:- Chemical combination - Chemical decomposition - Displacement - Double displacement. Oxidation & Reduction Oxidation in daily life, Rancidity ◆ Refraction of light at plane surfaces Halides Oxides Metals of medium reactivity Carbonate ore Sulphide ore Calcination Roasting Hand picking Washing Froth flotation Magnetic Separation Metals of low reactivity Sulphide ore Roasting Electrolysis of molten ore Metal (eg: Na, Mg, Al,etc.,) Chemical Reduction Auto Reduction Displacement Method Elecrolytic reduction Oxides Reduction Oxide of metal Metal Reduction of metal Refinig (eg.Ag) Refining of metal Distillation (eg: Cu, Zn, etc.,) Poling Liquation Electrolytic refining What is chemical displacement, write the list of apparatus/material and procedure of the experiment that you have conducted to observe chemical displacement? VýS$Æý‡$ÐéÆý‡… l íœ{ºÐ]lÇ l 18 l 2016 11 10th Class Special- Physical Science General Science-1 Model Paper 6. aldehyde among the following is b) C2H5OH a) C2H5CHO d) C2H5COCH3 c) C2H5COOH 7. Which is not belongs to halogen family a) F b) Cl c) Al d) Br 8. Angle of prism is 60°, and angle of minimum deviation is 30° . The refractions index of that prism is General Science - Paper-1 (English Version) Time.2.45 hr Max.Marks: 40 General Instructions: i. This Question paper consists part-A and Part-B. ii. PartA consists 3 sections. iii. Answer all questions. iv. Section-III consists internal choice. Choose the question accordingly and answer it. v. The answers for Part-B must be written in the question paper itself and attach it to your answer book. vi. The first 15 minutes is allotted for reading and understanding the question paper. PART-A SECTION-I Instructions: i. Answer all questions. ii. Each question carries 1 mark iii. Answer must be limited to 1-2sentences. 7×1=7M 1. 5V potential difference is allowed to pass across a resistance of 25Ω in a circuit. calculaated the current in the circuit. 2. How do the fog formed? 3. Sodium tested a solution with red litmus and obeserved that it changed into blue colour. What will be the PH range of that solution? 4. Draw a diagram showing the total internal reflaction. 5. What is the difference between an orbit (shell) and orbital of an atom? 6. Which molecule exists in planar triangular shape? draw its shape. 7. What are the major parts of a furnace which is used to carryout pyrochemical reaction in metallurgy? SECTION-II Instructions: i. Answer all questions. ii. Each question carries 2 marks. iii. Answer must be limited to 2-4sentences. 2×6=12M 8. What are the gases evolved when Lead Nitrate is heated? How do you test these gases? 9. Give any two daily life applications where we use convex and concave mirrors. 10. How do you support that the element Mg belongs to 3rd period and 2nd group? 11. Where do we observe the application of dispersion light in nature? 12. Write the structures of the following i) 2-Methyl -pentane-3-Ole ii) 3,4 Di Chloro -But-1-ene a) √2 b) 1 2 c) 0.5 d) 1 9. The value of I3 from the following juncI1 tion is 6A I2 a) 2A 3A b) 4A 2A c) 5A I5 I3 4A d) 7A I4 13. What is the magnification of the image formed. When an object is kept at a distance of 30cm from a convex lens of focal length 20cm. SECTION-III Instructions: i. Answer all questions. ii. Each question carries 4 marks iii. There is an internal choice for each question. Choose the question accordingly and answer it. iv. Answer must be limited to 6-8 sentences. 4×4=16M 14. Expain the role of four quantun numbers in assessing the exact position of an electron in an atom? (or) State Lenze's law and explain how it is helpful in explaining the energy ------ in electromagnetic induction. 15. What is chemical displacement, write the list of apparatus/material and procedure of the experiment that you have conducted to observe chemical displacement? (or) Write the precautions, list of apparatus /material and your observations for the experiment that you have conducted to know the required conditions for rusting of iron. 16. Observe the following table substance specific resistance (Ωm) Nickel 6.99×10–8 Lead 2.20×10–7 Silver 1.59×10–8 Silicon 6.40×102 Air 1.30×1016 i) which of the above is considered as a bad conductor of electricity. ii) which of the above is considererd as a good conductor of electricity. iii) Which of the above substances is a semi conductor iv) what is the metal present in nichrome? (or) Observe the following table. Substance PH Value lemon juice 2.1 distilled Water 7 coffee 4.8 washing Soda 12.8 Baking Soda 8.1 i) Among the substances given in the table. which is strong acid and which is strong base? ii) if phenolphthalein indicator is added to the solution baking soda, what is its colour? iii) which of the above substance does not show conductivity. iv) how the pH value of distilled water changes when lemon juice is added to it? 17. Draw ray diagrams to the following situations by a convex lens? i) point size image is formed ii) virtual image is formed (or) Bhumika's grandfather is unable to see the nearest objects. Draw diagrams showing his vision defect and its correction. PART-B ×½=5M 10× 1. The C.G.S. units of g in Q = ms∆Q is a) cal.g.°C b) cal/g°C c) cal/g d) cal.g 2. why do we use convex mirror as rear view mirror for vehicles a) enlarged image is formed b) real image is formed c) diminished image is formed d) inverted image is formed 3. The velocity of light in a substance is 2x108 m/s. Then the refractive index of that substance is a) 1.5 b) 2.5 c) 3.5 d) 3 4. Which of the following has highest ionisation energy? a) C b) Si c) Ge d) Sn 5. shapes of molecules was explained by a) VSEPRT theory b) valence bond theory c) lewis dot theory d) ion theory 10. The bond formed by overlapping of two orbitals along their axes in a) covalent b) ionic c) Π− bond d) σ − bond Answers 1) b 2) c 6) a 7) c 3) a 8) a 4) d 9) c 5) a 10) b ç³¨ {VóSyŠl ´ëÆ‡¬…r$Ï Ýë«¨…^éË…sôæ.. íÜËº‹ÜOò³ ç³NÇ¢Ýë¦Æ‡¬ÌZ ç³r$t Ýë«¨…^éË…sôæ {ç³Äñæ*VýSÔ>Ë, Ýë«§éÆý‡×æ MýS–™éÅË¯]l$ °Æý‡Óíßæ…^éÍ. EçÙ~…, M>…†, ç³Æý‡Ð]l*×æ$ °Æ>Ã×æ…, Ð]lÊËM>Ë Ð] ÈYMýSÆý‡×æ, Æý‡ÝëÄ¶æ$¯]lº…«§ýl…, Ñ§ýl$Å™Œl {ç³Ðéçßæ…, Ñ§ýl$Å§ýlÄ¶æ$ÝëP…™èl™èlÓ…, M>Æý‡¾¯Œl §é° çÜÐól$Ãâ¶æ¯éË$ Ð]l…sìæ A«§éÅÄ¶æ*Ë¯]l$ „ýS$×æ~…V> ^èl§ýlÐéÍ. ´ëuý‡Å ç³#çÜ¢MýS…ÌZ° A¿êÅÝëË¯]l$ Ððl$Æý‡$VýS$ç³Æý‡$^èl$MýS$° A°² Ñ¿êV>ÌZÏ° {ç³Ô¶æ²ËOò³¯é ç³NÇ¢Ýë¦Æ‡¬ÌZ AÐ]lV>çßæ¯]l ´÷…¨™ól çÜ$Ë$Ð]l#V> çÜÐ]l*«§é¯éË$ Æ>Ä¶æ$Ð]l^èl$a. Ýë«§éÆý‡×æ Ñ§éÅÆý‡$¦Ë$ ™ólÍV>Y AÆý‡¦Ð]l$Äôæ$Å EçÙ~…, ÌZçßæ çÜ…{VýSçßæ×æ Ô>çÜˆ…, BÐ]l*ÏË$&„>Æ>Ë$&ËÐ]l×êË$, Æý‡ÝëÄ¶æ$°MýS ^èlÆý‡ÅË$& Æý‡M>Ë$, Ð]lÊËM>Ë Ð]lÈYMýSÆý‡×æ, M>Æý‡¾¯Œl §é° çÜÐól$Ãâ¶æ¯éË$, M>…†, Ñ§ýl$Å™Œl {ç³Ðéçßæ… Ð]l…sìæ A«§éÅÄ¶æ*ËOò³ §ýl–íÙtÝëÇ…^éÍ. ◆ {ç³† A«§éÅÄ¶æ$…ÌZ° °Æý‡Ó^èl¯éË$, çÜ*{™éË$, {´ë£ýlÑ$MýS ¿êÐ]l¯]lË¯]l$ ¯ólÆý‡$aMøÐ]lyýl… Ð]lËÏ 2 Ð]l*Æý‡$PË$, 1 Ð]l*Æý‡$P {ç³Ô¶æ²ËMýS$ ™ólÍV>Y çÜÐ]l*«§é¯éË$ Æ>Ä¶æ$Ð]l^èl$a. Ð]l¬QÅOÐðl$¯]l ç³sêË¯]l$ MýS*yé {´ëMîSt‹Ü ^ólÄ¶æ*Í. D ÐéÆý‡… "MýSÆð‡…sŒæ AOòœÆŠ‡Þ' ¯ólsìæ Ýë„ìS "Ñ§ýlÅ' õ³iÌZ... VýS$Æý‡$ÐéÆý‡… l íœ{ºÐ]lÇ l 18 l 2016 12 Career Counselling KEY POINTS Different Solutions pH Values Solution HCl NaOH Distilled water Lemonjuice Coffee Carrot Juice Soda Water Tomato Juice Saliva (before meal) Saliva (after meal) pH value 1 13-14 7 2.5 5 4 6 4.1 7.4 5.8 USES Calorimeter: Determination of specific heat of substance. Thermometer: Determination of Temperature Prism: Observation of Angle of Dispersion. pH paper: Observation of Acid – Base Strength. Bleaching powder: Used as decolorizing agent, oxidant, used in preparation of chloroform, used in chlorination process. Baking Soda: Manufacture of cakes, preparation of Antacid, preparation of Anti septic. Washing Soda: Used in Glass, soap, paper industry preparation of borax, used to removal of hardness of water. Galvanometer: Determination of electric current. Electric motor: Convert the electric energy to mechanical energy. Dynamo: Convert the mechanical energy to electric energy Blast furnace: used to smelting process. Voltmeter: Determine the potential difference. Substance Bauxite Faraday: Laws of electrolysis. Maxwell: Electron magnetic theory J.J. Thomson: Watermelon model. Rutherford: Planetory Model Einstein: Laws of mass equivalence Sommerfeld: Elliptical orbit model Schrodinger: Wave equation Maxplank: Quantum theory Neils Bohr: Principle Quantum number Ulenbeck & Goudsmith: Spin Quantum number Dobereiner: Triad Theory Sorensen: pH Scale Newlands: Octave theory Sumio Lijima: Nanotubes : Formula : Al2O32H2O Epsum salt : MgSO47H2O Sinnabar Magnetite : HgS : Fe3O4 Galena Carnalite : PbS : KClMgCl26H2O Gypsum : CaSO4 2H2O Pyrotusite : MnO2 Hypo : Na2S2O32H2O Bleaching powder : CaOCl2 Plaster of Paris : CaSO4½H2O Ethanol : C2H5OH Ethyl Acetate : CH3COOC2H5 Soap : C17H35COONa Zincite Lime stone : ZnO : CaCO3 Horn silver Zinc Blende Rock Salt Hematite : AgCl : ZnS : NaCl : Fe2O3 Specific heat: cal/g.cº (or) J/Kg-k. Latent heat of fusion: Cal/gm(or) J/k.g Power of lens: dioptres Electric current: Ampere Specific resistivity: Ohm-mt Electric energy: KWH Atomic Radius: Angstrom Unit (Aº) Ionization potential: Electron Volt. sìæ.G….I. ¯ðlsŒæÐ]lÆŠ‡P G…½-H-/-ï³-i-yîlG… MøÆý‡$Þ¯]l$ A…¨-çÜ$¢¯]l² C¯Œl-íÜt-r*Å-sŒæË ÑÐ]l-Æ>Ë$ ™ðlË-ç³…yìl? & Æý‡Ð]l$Å, ¯]lÌŸY…yýl. PHYSICAL CONSTANTS – VALUES Specific heat of lead: 0.031Cal/g-Cº;130 J/Kg - k Specific heat of Mercury: 0.033Cal/g-Cº; 139 J/Kg – k Latent heat of Vaporization: 540 Cal /gm Latent heat of fusion: 80 Cal / gm Refractive Index of Diamond: 2.42 Refractive Index of Benzene: 1.50 Refractive Index of Quartz: 1.46 ELECTRONIC CONFIGURATION 1s22s22p63s1 Sodium (11): Potassium (19): 1s22s22p63s23p64s1 Calcium (20): 1s22s22p63s23p64s2 Iron (26): 1s22s22p63s23p64s23d6 Chromium(24): 1s22s22p63s23p64s13d5 Copper (29): 1s22s22p63s23p64s13d10 Phosphrous (15): 1s22s22p63s23p3 Nickel (28): 1s22s22p63s23p64s23d8 Sulphur (16): 1s22s22p63s23p4 Zinc (30): 1s22s22p63s23p64s23d10 ¿êÆý‡-™èl-§ól-Ô¶æ…ÌZ IIG…Ë±² Ðól$¯ól-gŒæ-Ððl$…sŒæ Ñ§ýlÅ¯]l$ A…¨-çÜ$¢-¯é²Æ‡¬. AçßæÃ-§é-»ê§Šl, MøÌŒæ-MýS™é, Ð]l¬…O»ñæ, »ñæ…VýS-â¶æ*Æý‡$, Møh-MøyŠl Ð]l…sìæ ÑÑ«§ýl {ç³§ól-Ô>ÌZÏ Òsìæ° ¯ðlË-Mö-ÌêµÆý‡$. D çÜ…çÜ¦ÌZÏ {ç³Ðól-Ô¶æ-{ç³-{MìSÄ¶æ$ JMóS Ñ«§ýl…V> E…r$…¨. D C¯Œl-íÜt-r*Å-sŒæ-Ë±² ï³i yìl´÷ÏÐ]l* C¯Œl Ðól$¯ól-gŒæ-Ððl$…sŒæ {´ù{V>-ÐŒl$¯]l$ A…¨-çÜ$¢-¯é²Æ‡¬. AÆý‡á™èl: HO§ðl¯é yìl{X. {ç³ÐólÔ¶æ…: M>Ð]l$¯Œl AyìlÃ-çÙ¯Œl sñæ‹Üt-(-M>Å-sŒæ), {VýS*‹³ yìlçÜP-çÙ¯Œl, C…r-Æý‡*ÓÅÌZÏ E¡¢-Æý‡~™èl B«§é-Æý‡…V>. Oòßæ§ýl-Æ>-»ê-§Šl-ÌZ° C…yìl-Ä¶æ$¯Œl ¼h-¯ðl‹Ü çÜ*PÌŒæ.. JMóS-yé¨ ´ù‹Üt {V>yýl$Å-Äôæ$sŒæ {´ù{V>…-(-ï³-i-ï³) A…¨-Ýù¢…¨. C¨ G…½H yìl{X™ø çÜÐ]l*¯]l…. Ð]l*Æð‡P-sìæ…VŠS, Oòœ¯é¯ŒlÞ, {Ýëtri A…yŠl Îyýl-ÆŠ‡-íÙ‹³, Bç³-Æó‡-çÙ¯ŒlÞ, C¯]l¹-Æó‡Ã-çÙ¯Œl sñæM>²Ëi, G…r-ÆŠ‡-{ò³-¯]l*Å-ÆŠ‡-íÙ‹³ Ð]l…sìæ òÜµçÙ-OÌñæ-gôæ-çÙ¯]l$Ï A…§ýl$»ê-r$ÌZ E¯é²Æ‡¬. AÆý‡á™èl: HO§ðl¯é yìl{X. Æð‡…yólâ¶æÏ ç³° A¯]l$-¿¶æÐ]l… E¯]l² A¿¶æÅÆý‡$¦-ËMýS$ {´ë«§é¯]lÅ… E…r$…¨. {ç³ÐólÔ¶æ…: iÐ]l*ÅsŒæ, AMýS-yýl-Ñ$MŠSÞ, ç³° A¯]l$-¿¶æÐ]l…, A¿¶æÅ-Ç¦ÌZ° ¯éÄ¶æ$-MýS™èlÓ Ë„ýS-×êË B«§é-Æý‡…V> {ç³Ðól-Ô>Ë$ MýSÍµÝë¢Æý‡$. Ððl»Œæ-OòÜsŒæ: www.isb.edu Ð]l¬…O»ñæ-ÌZ° ¯]lÈÞ Ððl*…i C¯Œl-íÜt-r*ÅsŒæ B‹œ Ðól$¯ól-gŒæÐðl$…sŒæ.. ÑÑ«§ýl òÜµçÙ-OÌñæ-gôæ-çÙ-¯]lÏ™ø G…½H A…¨-Ýù¢…¨. AÆý‡á™èl: HO§ðl¯é yìl{X {ç³ÐólÔ¶æ…: G¯Œl-Ð]l*ÅsŒæ {ç³Ðól-Ô¶æ-ç³-È-„ýSÌZ E¡¢-Æý‡~™èl B«§é-Æý‡…V>. G…ïÜH MøÆý‡$Þ¯]l$ A…¨-çÜ$¢¯]l² C¯Œl-íÜt-r*Å-sŒæË ÑÐ]l-Æ>Ë$ ™ðlË-ç³…yìl? & Æ>«§ýl, Æý‡…V>Æð‡yìlz. sìæ. Ð]l¬Æý‡ä«§ýlÆý‡¯Œl UNITS SCIENTISTS G…½H MøÆý‡$Þ.. CHEMICAL SUBSTANCES–FORMULAS Oòßæ§ýl-Æ>-»ê-§Šl-ÌZ° C…yìl-Ä¶æ$¯Œl ¼h-¯ðl‹Ü çÜ*PÌŒæ.. JMóS-yé¨ ´ù‹Üt {V>yýl$Å-Äôæ$sŒæ {´ù{V>…-(-ï³-i-ï³) A…¨-Ýù¢…¨. C¨ G…½H yìl{X™ø çÜÐ]l*¯]l…. Ð]l*Æð‡P-sìæ…VŠS, Oòœ¯é¯ŒlÞ, {Ýëtri A…yŠl Îyýl-ÆŠ‡íÙ‹³, Bç³-Æó‡-çÙ¯ŒlÞ, C¯]l¹-Æó‡Ã-çÙ¯Œl sñæM>²-Ëi Ð]l…sìæ òÜµçÙ-OÌñæ-gôæ-çÙ¯]l$Ï A…§ýl$-»ê-r$ÌZ E¯é²Æ‡¬. Oòßæ§ýl-Æ>-»ê-§Šl-ÌZ° EÝëÃ-°Ä¶æ* ÑÔ¶æÓ-Ñ-§éÅ-ËÄ¶æ$….. G…ïÜ-H¯]l$ A…¨-Ýù¢…¨. AÆý‡á™èl: Ð]l*Å£ýl-Ððl$-sìæMŠSÞ çÜ»ñæj-MýS$t™ø yìl{X. {ç³ÐólÔ¶æ…: IòÜ-sŒæÌZ E¡¢-Æý‡~™èl B«§é-Æý‡…V>. Ððl»Œæ-OòÜsŒæ: www.osmania.ac.in ÑÔ>-Q-ç³-r²…-ÌZ° B…{«§é ÑÔ¶æÓ-Ñ-§éÅ-ËÄ¶æ$….. G…ïÜH¯]l$ A…¨-Ýù¢…¨. AÆý‡á™èl: çÜ…º…-«¨™èl Ñ¿ê-VýS…ÌZ yìl{X. {ç³ÐólÔ¶æ…: {ç³Ðól-Ô¶æ-ç³-È-„ýSÌZ E¡¢-Æý‡~™èl B«§é-Æý‡…V>. Ððl»Œæ-OòÜsŒæ: www.nmims.edu Ð]l¬…O»ñæ-ÌZ° G‹Üï³ Ogñæ¯Œl C¯Œl-íÜt-r*ÅsŒæ B‹œ Ðól$¯ól-gŒæ-Ððl$…sŒæ A…yŠl ÈòÜÆŠ‡a.. ÑÑ«§ýl òÜµçÙ-OÌñæ-gôæ-çÙ-¯]lÏ™ø Ðól$¯ól-gŒæ-Ððl$…sŒæ Ñ§ýlÅ¯]l$ A…¨-Ýù¢…¨. AÆý‡á™èl: çÜ…º…-«¨™èl Ñ¿ê-VýS…ÌZ yìl{X. {ç³ÐólÔ¶æ…: {ç³Ðól-Ô¶æ-ç³-È„ýS, {VýS*‹³-yìl-çÜP-çÙ¯Œl, C…r-Æý‡*ÓÅÌZÏ E¡¢-Æý‡~™èl B«§é-Æý‡…V>. Ððl»Œæ-OòÜsŒæ: www.spjimr.org ç³#×ôæ-ÌZ° íÜ…º-Ä¶æ*-íÜ‹Ü C¯Œl-íÜt-r*ÅsŒæ B‹œ ¼h-¯ðl‹Ü Ðól$¯ólgŒæ-Ððl$…sŒæ.. ÑÑ«§ýl òÜµçÙ-OÌñæ-gôæ-çÙ-¯]lÏ™ø G…½H A…¨-Ýù¢…¨. AÆý‡á™èl: çÜ…º…-«¨™èl Ñ¿ê-VýS…ÌZ yìl{X. {ç³ÐólÔ¶æ…: G‹Ü-G-¯Œl-Hï³ {ç³Ðól-Ô¶æ-ç³-È„ýS, {VýS*‹³ yìlçÜP-çÙ¯Œl, C…r-Æý‡*ÓÅÌZÏ E¡¢-Æý‡~™èl B«§é-Æý‡…V>. Ððl»Œæ-OòÜsŒæ: www.sibm.edu AçßæÃ-§é-»ê-§Šl-ÌZ° Ð]l¬{§é C¯Œl-íÜt-r*ÅsŒæ B‹œ MýSÐ]lÊÅ-°-MóSçÙ¯ŒlÞ.. òœÌZ {´ù{V>ÐŒl$Þ, MýSÐ]lÊÅ-°-MóS-çÙ-¯ŒlÞÌZ ´ù‹Üt {V>yýl$Å-Äôæ$sŒæ yìl´÷Ï-Ð]l*¯]l$ A…¨-Ýù¢…¨. AÆý‡á™èl: çÜ…º…-«¨™èl Ñ¿ê-VýS…ÌZ yìl{X. {ç³ÐólÔ¶æ…: {ç³Ðól-Ô¶æ-ç³-È-„ýSÌZ E¡¢-Æý‡~™èl B«§é-Æý‡…V>. Ððl»Œæ-OòÜsŒæ: www.mica.ac.in gêÆý‡U…-yŠl-ÌZ° gôæÑ-Ä¶æ$ÆŠ‡ C¯Œl-íÜt-r*ÅsŒæ B‹œ Ðól$¯ól-gŒæÐðl$…sŒæ.. ÑÑ«§ýl òÜµçÙ-OÌñæ-gôæ-çÙ-¯]lÏ™ø G…½H A…¨-Ýù¢…¨. AÆý‡á™èl: HO§ðl¯é yìl{X. {ç³ÐólÔ¶æ…: GMŠSÞ-H-sîæ-/-i-Ð]l*ÅsŒæ, {VýS*‹³ yìlçÜP-çÙ¯Œl, C…rÆý‡*ÓÅÌZÏ E¡¢-Æý‡~™èl B«§é-Æý‡…V>. Ððl»Œæ-OòÜsŒæ: www.xlri.ac.in çœ$h-Ä¶æ*-»ê-§Šl-ÌZ° C¯Œl-íÜt-r*ÅsŒæ B‹œ Ðól$¯ól-gŒæ-Ððl$…sŒæ sñæM>²-Ëi.. ÑÑ«§ýl òÜµçÙ-OÌñæ-gôæ-çÙ-¯]lÏ™ø Ðól$¯ól-gŒæ-Ððl$…sŒæ Ñ§ýlÅ¯]l$ A…¨-Ýù¢…¨. AÆý‡á™èl: HO§ðl¯é yìl{X. {ç³ÐólÔ¶æ…: {ç³Ðól-Ô¶æ-ç³-È„ýS, {VýS*‹³-yìl-çÜP-çÙ¯Œl, C…r-Æý‡*ÓÅÌZÏ E¡¢-Æý‡~™èl B«§é-Æý‡…V>. Ððl»Œæ-OòÜsŒæ: www.imt.edu Ððl»Œæ-OòÜsŒæ: www.andhrauniversity.edu.in A¯]l…-™èl-ç³#-Æý‡…-ÌZ° } MýS–çÙ~-§ól-Ð]l-Æ>Ä¶æ$ ÑÔ¶æÓ-Ñ-§éÅËÄ¶æ$….. G…ïÜ-H¯]l$ A…¨-Ýù¢…¨. AÆý‡á™èl: çÜ…º…-«¨™èl Ñ¿ê-VýS…ÌZ yìl{X. {ç³ÐólÔ¶æ…: IòÜ-sŒæÌZ Æ>Å…MýS$ B«§é-Æý‡…V>. Ððl»Œæ-OòÜsŒæ: www.skuniversity.org Ð]lÆý‡…-VýS-ÌŒæ-ÌZ° M>MýS-¡Ä¶æ$ ÑÔ¶æÓ-Ñ-§éÅ-ËÄ¶æ$….. G…ïÜ-H¯]l$ A…¨-Ýù¢…¨. AÆý‡á™èl: çÜ…º…-«¨™èl Ñ¿ê-VýS…ÌZ yìl{X. {ç³ÐólÔ¶æ…: IòÜ-sŒæÌZ Æ>Å…MýS$ B«§é-Æý‡…V>. Ððl»Œæ-OòÜsŒæ: www.kakatiya.ac.in Ò$ çÜË-àË$, çÜ…§ól-àË$ ç³…´ë-ÍÞ¯]l _Æý‡$-¯éÐ]l*: Ýë„ìS ¿¶æÑ™èl, MóSÆ>‹œ Ýë„ìS fÆý‡²-Íf… çÜ*PÌŒæ, 8&-2-&-6-96, 69-7-/-7-5-/1, íÜ™éÆý‡ {V>…yŠl çßZrÌŒæ ç³MýSP¯]l, ÆøyŠl ¯ðl….12, º…gê-Æ>-íßæÌŒæÞ, Oòßæ§ýl-Æ>-»ê-§Šl-&-5-0-0-0-34. D&-Ððl$-Æ‡¬ÌŒæ : [email protected] {VýS*‹³&2 B¯ŒlOÌæñ ¯Œl ç³È„ýSË$ Oòßæ§ýl-Æ>-»ê§Šl: ™ðlË…V>×æ ç³¼ÏMŠS çÜÈÓ‹Ü MýSÑ$çÙ¯Œl °Æý‡ÓíßæçÜ$¢¯]l² {VýS*‹³&2 ç³È„ýSË$ H{í³ÌŒæ 24¯]l fÆý‡VýS¯]l$¯é²Æ‡¬. D ¯ólç³£ýlÅ…ÌZ Ýë„ìS f¯]lÆý‡ÌŒæ çÜtyîl‹Ü õ³ç³ÆŠ‡MýS$ ™ðlË$VýS$, C…WÏ‹Ù Ò$yìlÄ¶æ$…ËÌZ B¯ŒlOÌñæ¯Œl ç³È„ýSË$ A…§ýl$»êr$ÌZMìS ™ðl_a…¨. {ç³† {ç³Ô¶æ²MýS$ ÑÐ]lÆý‡×æ™ø çÜ»ñæjMýS$tË$, ^éç³tÆý‡Ï ÐéÈV> °ç³#×æ$Ë$ Æý‡*´÷…¨…_¯]l 6 {V>…yŠl sñæçÜ$tË$ A…¨Ýù¢…¨. Òsìæ™ø ´ër$ A°² sîæG‹Üï³GïÜÞ ç³È„ýSËMýS$ Eç³Äñæ*VýSç³yólÌê çÜtyîl Ððl$sîæÇÄ¶æ$ÌŒæ, ¼sŒæ»êÅ…MŠS, ´ë™èl {ç³Ô¶æ²ç³{™éË$ A…¨Ýù¢…¨. ^éç³tÆý‡Ï ÐéÈ {´ëMîSt‹Ü sñæçÜ$tË$ C…yìlÄ¶æ$¯Œl ´ëÍsîæ; C…yìlÄ¶æ$¯Œl íßæçÜtÈ; OòÜ¯ŒlÞ A…yŠl sñæM>²Ëi; ™ðlË…V>×æ GM>¯]lÒ$; ™ðlË…V>×æ gê{VýSïœ http://onlinetests.sakshieducation.com/ SAKSHI EDUCATION

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