Download SHHW - Class - X BC - Sapphire International School Ranchi

Summer Holiday Homework – 2017
Class X (B and C)
Subject
English
Summer Homework
Read the novel 'The Story of my Life' (Chapters 1 - 10) and write on the following topics
based on your reading.
1. Helen's going to Baltimore
2. Arrival of Ms. Sullivan & learning the names of objects.
3. Learning to read using illustration.
4. Helen preparing for Christmas Celebration.
5. The journey to Boston
6. Vacation at Brewster.
LITERATURE - Write a summary of the chapter "The Two Gentlemen of Verona", commenting on
the importance and value of personal sacrifice. Word Limit- 250
LANGUAGE - Write an Essay on any one of the following topics: Word Limit: 250
a) MONEY = HAPPINESS.
b) WHY SHOULD WE BELIEVE IN MORALITY, WHEN THE CORRUPT ARE SO
SUCCESSFUL?
c) HOPE.
Hindi
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eqEcbZ esa jgus okys fe= dks xehZ dh NqV~Vh esa vkeaf=r djrs gq, ,d i= fyf[k,
A
2- lwjnkl ds igys in dh O;k[;k djrs gq, fyf[k, fd xksfi;ksa us m)o dks cMHkkxh
D;ksa dgk gS \D;k ;g m)o ij ,d O;aX; gS\ dSls \
Mathematics Solve the attached worksheets of Chapters:
1. Real Numbers
Science
2. Polynomials
Physics –
1. Solve Ex. 12.1,12.2,12.3,12.4,12.4,12.5,12.6,12.7,12.8,12.9.
2. First ten questions of page no. 221.
3. Solve the attached worksheet.
Chemistry – Solve the attached worksheet.
Biology – Solve the attached worksheet.
Social
Science
Computer
Solve the attached worksheet.
Prepare a chart on the uses of internet in various fields along with pictures and brief explanation. Eg.
e-shopping, social networking, etc.
SUMMER HOLIDAY HOMEWORK - 2017
CLASS – 10 BC
SUBJECT – BIOLOGY
1 . Answer the following question :
I . What is the function of chlorophyll in photosynthesis ?
II . The oxygen released by plants comes from carbon-di-oxide or water ? Explain.
III . Name the different types of pigments involved in photosynthesis .
IV . What do you mean by holozoic mode of nutrition.
V . Give example of some autotrophic bacteria.
VI . Describe the process of nutrition in Amoeba with the help of diagram.
VII . What is the mode of nutrition in Fungi?
VIII . Define Parasitism. Give example of few parasites that parasitise human beings.
IX . How diffusion meets all the requirements of unicellular organisms ?
X . Write down the name of raw materials and products of photosynthesis.
SAPPHIRE INTERNATIONAL SCHOOL
SUMMER HOLIDAY HOMEWORK
CLASS-10
SEC- B, C
SUBJECT-CHEMISTRY
WORKSHEET-1
CHAPTER- CHEMICAL REACTIONS AND EQUATIONS:
Section-Chemical Change and Chemical Equations:
1. Write down the differences between physical change and chemical change with two
examples for each.
2. Explain unbalanced and balanced chemical equation with the help of an example . Write
down the law of chemical combination which implies that a chemical equation must be
balanced
3. What happens when magnesium ribbon burns in presence of air? write down the two
observations. Also name the product formed and write down the balanced chemical equation
for the reaction.
4. Write down the chemical formulae for the following:
a. Sulphuric acid b. Hydrochloric acid c. Nitric acid d. Sodium sulphate e. Calcium
oxide f. Calcium carbonate g. Zinc sulphate h. Iron(II) sulphate i. Lead (II) chloride
j. Magnesium sulphate k. Silver nitrate l. Barium chloride m. Potassium iodide n.
Aluminium oxide o. Ferric oxide
5. Balance the following chemical equations:
i) CH4 + O2
CO2 + H2O
ii) Zn +HCl
ZnCl2 + H2
iii) CaCO3 +HCl
CaCl2 + H2O + CO2
iv) Fe2O3 + Al
v) NaOH + H2SO4
(vi) H2 + O2
Al2O3 + Fe
Na2SO4 + H2O
H2O
(vii) C6H12O6 + O2 +H2O
(viii) FeSO4
Fe2O3 + SO2 +SO3
(ix) Pb(NO3)2 + KI
(x) AgBr
CO2+ H2O
Sunlight
PbI2 + KNO3
Ag +Br2
6. How are the following symbolised in a chemical equation:
i) A reactant/ product in an aqueous solution
ii) A reactant / product in liquid state
iii) A reactant / product in solid state
7. Translate the following statements into chemical equation and then balance them:
i) Copper reacts with oxygen to give cupric oxide
(ii) Zinc oxide reacts with carbon to give zinc and carbon monoxide
(iii) Lead nitrate undergoes thermal decomposition to give lead oxide , nitrogen dioxide and
oxygen
(iv)Calcium oxide reacts with water to give calcium hydroxide.
(v) Iron reacts with copper sulphate to give iron (II) sulphate and copper
(vi) Sodium sulphate reacts with barium chloride to give barium sulphate and sodium
chloride
8. Write balanced chemical equation for each of the following:
i) Calcium carbonate
Heat
ii) Calcium + Water
iii) Iron + Chlorine
Calcium oxide+ Carbon dioxide
Calcium hydroxide + Water
Iron (III) chloride
iv)Sodium hydrogencarbonate +Sulphuric acid
dioxide+Water
(v) Calcium carbonate + Water+ Carbon dioxide
Sodium sulphate +Carbon
Calcium hydrogencarbonate
(vi) Potassium nitrate
Potassium nitrite + Oxygen
(vii) Copper carbonate
Copper oxide + Carbon dioxide
(viii) Ammonia + Hydrogen chloride acid
(ix) Sodium + Oxygen
Sodium oxide
(x) Lead (II) oxide + Carbon
Lead + Carbon dioxide
Section- Types of chemical reactions
1. Define the following giving an example for each
a) Combination reaction
b) Decomposition reaction
c) Displacement reaction
Ammonium chloride
d)Double displacement reaction
e) Redox reaction
f) Exothermic reaction
g) Endothermic reaction
2. Quick lime reacts with water to give slaked lime releasing a large amount of heat. Answer
the following questions:
(a) Predict whether the reaction is exothermic or endothermic
(b) Write down the chemical formulae for quick lime and slaked lime
(c) Write down a balanced chemical equation for the reaction indicating state symbols
(c) Predict the type of reaction
3. Lead nitrate on heating emits brown fumes of gas Y with the formation of solid compound
X and liberation of gas Z which is supporter of combustion. Answer the following questions:
(a) Identify the gases Y and Z and solid X
(b) Write down the balanced chemical equation for the reaction indicating the state symbols
4. Burning of coal is an example of both oxidation reaction and combination reaction.
Explain the statement by writing appropriate chemical equation
5. When crystals of ferrous sulphate is heated it loses water of crystallisation and changes its
colour .On further heating ferrous sulphate decomposes to ferric oxide with evolution of two
gases containing sulphur. Answer the following questions:
(a) Write down the formulae for crystalline ferrous sulphate.
(b) How many molecules of water of crystallisation is present in the crystalline ferrous
sulphate?
(c) Identify the two gases
(d) Write down the balanced chemical equation for the reaction.
(e) Predict the type of reaction
6. (a) Why silver nitrate is stored in dark coloured bottles in laboratory?
(b) What is the colour of silver chloride?
(c) Write down a balanced chemical equation for the reaction which takes place when silver
bromide is exposed to light. Predict the type of chemical reaction?
7. What is electrolysis? Draw a labelled diagram to show electrolysis of water.
8. The figure below shows experimental setup for reaction of iron with copper sulphate.
Testtube A shows copper sulphate solution before the reaction and testtube B shows copper
sulphate solution after the reaction. Answer the question that follows:
(a) What is the colour of copper sulphate solution?
(b) What happens to the colour of copper sulphate solution in test tube A as time passes?
(c) Why does the iron nail appear brownish in colour when taken out from copper sulphate
solution?
(d) Predict the type of chemical reaction which takes place in the above case?
(e) Write down balanced chemical equation for the above chemical reaction
9. Comment on the feasibility of following displacement reaction: Write down the
balanced chemical equation for the reaction where the displacement reaction is feasible:
(a) Reaction of copper with zinc sulphate
(b) Reaction of magnesium with sulphuric acid
(c) Reaction of copper with silver nitrate
(d) Reaction of copper with iron sulphate
10. What is precipitation reaction? Give one example.
11. The chemical equation below shows reaction of copper oxide with hydrogen
CuO + H2
Cu +H2O
(a) What is the colour of copper oxide and elemental copper?
(b) Predict the type of reaction?
(c) Identify the species which is oxidised and which is reduced?
12. For the following chemical reaction identify the species which is oxidised and the
substance which is reduced:
MnO2 + 4HCl
MnCl2 + 2H2O +Cl2
13. What is corrosion? Explain with an example.
14. The figure below shows experimental setup for studying rusting of iron.
(a) What is rusting?
(b) Identify the test tube in which rusting of iron takes place? Explain your answer
(c) Write down two steps to prevent rusting.
15. Why do foods containing fats / oil taste bad when left for a long time?
16. What are antioxidants? Give example
Complete the following questions from NCERT textbook:
PAGE 6: Q1to Q3
PAGE10: Q1-Q2
PAGE13: Q1 to Q3
PAGE 14, 15 AND 16- EXERCISE QUESTION: Q1 to Q20
PROJECT- WORK:
On a half chart paper write about an element whose name starts with first letter of your name.
( E.g. Student name- Sumi , Element name- Silver.) Follow the following format:
ELEMENT- SILVER STUDENT NAME-SUMI (Only name of element and student name should be
printed other informations should be hand written )
CHEMICAL NAME OF ELEMENTATOMIC NUMBER MASS NUMBERATOMIC MASSPOSITION OF ELEMENT IN PERIODIC TABLEELEMENT NAME
GROUP NUMBER
PERIOD NUMBER
PHYSICAL PROPERTY
PHYSICAL STATE AT
ROOM TEMPERATURE
COLOUR
MELTING POINT
BOILING POINT
DENSITY
TYPE OF ELEMENT- METAL/NON- METAL/SEMI-METAL CHEMICAL PROPERTY (Write down the chemical equation for each reaction below)
REACTION WITH AIR
Use -
REACTION WITH
OXYGEN
Mention two use of the element:
REACTION WITH
HYDROGEN
REACTION WITH
WATER
Summer Holiday Homework (2017)
Mathematics (Class 10 BC)
Chapter - Real Numbers
Worksheet 1
1 .Find the greatest number which divides 285 and 1245 leaving the same remainder 5 in each case. .
2. The length, breadth and height of a room are 8m 25cm, 6m 75cm and 4m 50cm, resp. Find the longest
rod which can measure the three dimensions of the room exactly.
3. Find the largest number that will divide 398, 436 and 542 leaving remainders 7, 11 and 15 respectively.
4. A rectangular courtyard is 18m 72cm long and 13m 20cm broad. It is to be paved with square tiles of
the same size. Find the least possible number of such square tiles required.
5. HCF of two numbers is 145 and their LCM is 2175. If one number is 725, find the other. .
6. Prove that (a)
,
b)
7. In a seminar, the number of participants in Hindi, English and Mathematics are 60, 84 and 108
respectively. Find the minimum number of rooms required if in each room the same number of
participants is to be seated and all of them being in the same subject. .
8. Three sets of English, Hindi and Mathematics books have to be stacked in such a way that all the books
are stored subject wise and the height of each stack is the same. The number of English books is 96,
that of Hindi books is 240 and the number of Mathematics books is 336. Assuming that all the books
are of the same thickness, determine the number of stacks of English, Hindi and Mathematics books.
9 .Prove that the following numbers are irrational: a)
10.The decimal expansion of the rational number
decimal?
,
b)
,
c)
will terminate after how many places of
Chapter - Real Numbers
Worksheet 2
1. A number when divided by 61 gives 27 as quotient and 32 as remainder. Find the number.
2. By what number should 1365 be divided to get 31 as quotient and 32 as remainder?
3. Using Euclid`s algorithm, find the HCF of
(i) 405 and 2520 (ii) 504 and 1188 (iii) 960 and 1575
4. The HCF of two numbers is 11 and their LCM is 7700. If one of the numbers is 161 , find the other
5. Find the largest number which divides 320 and 457 leaving remainders 5 and 7 respectively.
6. Prove that each of the following numbers is irrational:
(i)
(ii)
(iii)
(iv)
7. Express each of the following as a fraction in simplest form:
(i) 0.
(ii) 2.
(iii) 0.
(iv) 0.
8. Six bells commence tolling together and toll at intervals of 2,4,6,8,10,12 minutes respectively. In 30
hours, how many times do they toll together?
9. The decimal representation of 71/150 is
(a) a terminal decimal
(b) a non-terminating repeating decimal
(c) a non-terminating and non-repeating decimal
d) none of these
Worksheet 1
Worksheet -2
CHAPTER: POLYNOMIAL(CLASS 10 B,C)
1.Find a quadratic polynomial, the sum and product of whose zeroes are 0 and √5 respectively.
2. Find the quadratic polynomial, the sum and product of whose zeroes are 4 and 1, respectively.
3. If a and b are the zeros of the quadratic polynomial f(x) = x2-5x+4, find the value of 1/a + 1/b - 2a b
4. Find the zeroes of the quadratic polynomial 4 √3 x2 + 5 x - 2 √3 and verify the relationship
between the zeroes and the coefficients.
5. Find the zeroes of the quadratic polynomial 4u2 + 8u and verify the relationship between the
zeroes and the coefficients
6. Find the quadratic polynomial, the sum and product of whose zeroes are √2 and 3 respectively.
7. If a and b are the zeros of the given quadratic polynomial f(x)= 5x2 - 7x + 1, find the value 1/a +1/b
8. Find the zeroes of the polynomial x2 – 3 and verify the relationship between the zeroes and the Coefficients
9. Find the remainder when p(x)= x3 - 6x2 + 2x - 4 when divided by 1 - 2x.
10. Find the remainder when x51+51 is divided by (x+1).
11. Find all the integral zeros of x3 - 3x2 - 2x + 6
12. Obtain all zeros of 3x4 + 6x3 - 2x2 - 10x - 5, if two of its zeros are √5/√3 and - √5/√3
13. If (x - 2) and [x – ½ ] are the factors of the polynomials qx2 + 5x + r prove that q = r
14. If the zeroes of the polynomial are 3x2 − 5x + 2 are a+ b and a- b, find a and b.
15. On dividing 2x2 + 3x + 1 by a polynomial g(x), the quotient and the remainder were 2x-1 and 3
respectively. Find g (x).
Pallab Roygupta
Work Sheet - Current Electricity
CBSE – PHYSICS
Class:- 10 BC
1. Define ‘Current’. Write its mathematical expression and S.I unit.
2. Define ‘Potential’ and ‘Potential Difference’. Write the mathematical expressions and
S.I units.
3. What is resistance? What is the cause of resistance? State and explain the factors
affecting the resistance of a conductor. Write the S.I unit of resistance.
4. Define conductance and write its S.I unit.
5. State Ohm’s law. Write its mathematical expression and its limitation.
6. Draw a circuit diagram for the experimental verification of Ohm’s law.
7. What are Ohmic and Non –Ohmic conductors? Draw a V – I and I – V graph for an
Ohmic and Non –Ohmic conductor.
8. Define resistivity/specific resistance. Write its mathematical expression and S.I unit.
State and explain the factors affecting resistivity.
9. Define conductivity. Write its mathematical expression and S.I unit.
10. Explain the variation of resistance and resistivity with temperature for metals, alloys
and semiconductors.
11. Numerical on current, p.d, Ohm’s law and resistivity.
12. Find the p.d required to pass a current of 0.2A in a wire of resistance 20ohm.
13. An electric bulb draws 1.2A current at 6V. Find the resistance of the filament of the
bulb.
14. A car bulb of resistance 2ohm is connected to a battery of 4V. Find the current.
15. In an Ohm’s law experiment following data was obtained16. p.d V(in volt) 0.5 1 1.5 2 2.5
17. Current I(ampere) 0.2 0.4 0.6 0.8 1
(i)
Draw a V –I graph and use it to find (ii)
p.d when current is 0.5A.
(iii)
current when p.d is 0.75V
(iv)
Resistance in the circuit.
18. Two wires of same material and same length have radii r1 and r2. Compare their
resistances and resistivity.
19. A wire of 3ohm and 10cm is stretched to 30cm. Find its new resistance.
20. A wire of 9ohm and 30cm is tripled on itself. Find its new resistance.
21. Define potential drop. Write its mathematical expression and S.I unit.
22. For combination of resistances in series derive the following –
RP =R1 + R2
23. For combination of resistances in parallel derive the following 1/RP = 1/R1 + 1/R2
Pallab Roygupta
24. A cell of emf 1.5 V and internal resistance 10 ohms is connected to a resistor of 5
ohms, with an ammeter in series. What is the reading in the ammeter?
25. Name two substances whose resistance (i) increases, (ii) decreases
(iii) remains same; when they are heated.
26. A wire is stretched to four times its original length. Find its new resistance.
27. Write two characteristics each of series and parallel connections.
28. Four resistance of 2 ohm each are joined end to end to form a square ABCD. Calculate
the equivalent resistance of the combination between any two adjacent corners.
29. Find the resistivity of a conductor in which a current density of 2.5Am-2 is found to
exist, when an electric field of 15 V/m is applied on it.
30. Write down the difference between voltmeter and ammeter.
Summer Holiday Homework 2017
(Class – 10 BC)
Subject – Social Science
History - The Rise of Nationalism in Europe
Short Answer Type Questions
1. What is “Statue of Liberty”? What does the statue signify?
2. What is a nation-state? What are its main features?
3. In the context of pre-revolutionary France what is referred to as the „Estate General‟?
4. Name four European powers that collectively defeated Napoleon.
5. Name two secret societies set up in Italy in early 19th century.
6. Who constituted the European middle class in 19th century?
7. Name the treaty which recognised Greece as an independent nation.
8. What is meant by the term Utopian?
9. What was „New Conservatism‟?
10. What is meant by „Suffrage‟?
Long Answer Type Questions
1. What steps did the French Revolutionaries take to create a sense of collective identity
among the French people?
2. “Napoleon had destroyed democracy in France, but in the administrative field he had
incorporated revolutionary principles”. Justify the statement.
3. What was the impact of Treaty of Vienna (1815) on European people?
4. Explain liberalism in political and economic fields prevailing in Europe in the 19th
century.
5. How did the growth of industrialisation change the social and political equation of
Europe?
Geography – Resources
Answer the following questions:
1. Distinguish between stock and potential resources.
2. What are the three stages of resource planning in India?
3. Why is resource planning essential?
4. Which soil type is made up of lava flow?
5. What is the main cause of land degradation in India? How can we check land degradation?
6. Mention any three features of red soil.
7. State the characteristics of alluvial soil. Distinguish between khadar and bhangar variety of
alluvium.
Political Science - Power Sharing
a. Explain how Belgium was able to solve its ethnic problem./State the main elements of
the power sharing model evolved in Belgium.
b. Differentiate between horizontal and vertical division of powers.
c. “Both Belgium and Sri Lanka are democracies but they follow different systems of
power sharing”. Support the statement by giving three points of difference.
d. “Power-sharing is the very spirit of democracy”. Justify the statement with three
suitable points.
e. What is the prudential reason behind power sharing?