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CHEMISTRY
1. Which of the following statement is not applicable to chemisorption
(1) It is slow
(2) It is irreversible
(3) It is independent of temperature
(4) It is highly specific 2. The dissociation constant of an acid HA is 1 x 10-5. The pH
of 0.1 molar solution of the acid will be:
(1) One
(2) Five
(3) Four
(4) Three 3. Buffer solution can be obtained by mixing aqueous solutions of:
NaCI and HCI
(1)
(2) CH3COONa and CH3COOH
(3) CH3COOH and excess NaOH
(4) CH3COONa and Excess HCI 4. Ammonia gas dissolves in water to form NH4OH.
In this reaction water acts as:
(1) A base
(2) A conjugate base
(3) A non-polar solvent
(4) An acid 5. The number of atoms in one unit cell of a face centred cubic lattice is:
(1) 4
(2) 1
(3) 2
(4) 3 6. Precipitation takes place when the product of concentration of ions:
exceeds their solubility product
(1)
(2) is less than their solubility product
(3) is negligible
(4) equals their solubility product 7. Artificial radioactivity was discovered by:
(1) Henry Becquerel
(2) Irene Curie and Fredrick Joliot
(3) J.J. Thomson
(4) Rutherford 8. In the β-particle emission, the daughter nuclide will be an.....of the
parent.
(1) Isotope
(2) Isotone
(3) Isotope or isobar
(4) Isobar 9. In electro-refining of copper some gold is deposited as:
mud
(1) Anode
(2) Electrolyte
(3) Cathode
(4) Cathode mud 10. Bauxite is concentrated by:
(1) Froth floatation process
(2) Chemical method
(2) Roasting
(4) Magnetic separation 11. Which is wrongly matched?
+Zn + Sn
(1) Monel metal-Cu
(2) Duralumin - Al + Cu + Mg + Mn
(3) Alnico - Fe + Al + Ni + Co
(4) German silver -Cu + Zn + Ni 12. The co-ordination number of a metal in coordination compounds is:
(1) same as secondary valency.
(2) sum of primary and secondary valencies
(3) same as the oxidation number of the central metal atom
(4) same as primary valency 13. When carbon monoxide is passed over solid caustic
soda heated to 2000C, it forms :
(1) NaHCO3
(2) H-COONa
(3) CH3COONa
(4) Na2CO3 14. Which one of the following on oxidation with alkaline permanganate
solution yields benzoic acid?
(1) Phenol
(2) Isopropyl Chloride
(3) Benzyl chloride
(4) Chlorobenzene 15. The final product of the oxidation of ethyl of alcohol is:
(1) Acetone
(2) Acetic acid
(3) Ethane
(4) Acetaldehyde 16. Carbolic acid is :
(1) Acetic acid
(2) Salicylic acid
(3) Phenol
(4) Formic acid 17. Phenol can be converted into salicylic acid by:
(1) Reimer-
Tiemann reaction
(2) Cannizzaro reaction
(3) Perkin reaction
(4) Etard reaction 18. Benzaldehyde is different from aliphatic aldehydes in its
reaction towards
(1) Tollens reagent
(2) NaHSO3 solution
(3) Fehling's solution
(4) Schiff's reagent 19. Acetal formation from an aldehyde and an alcohol is favoured
by the presence of
(1) Conc. H2SO4
(2) HCN
(3) Acetic acid
(4) Dry HCI 20. A mixture of calcium acetate and calcium acetate benzoate on dry
distillation gives:
(1) Benzophenone
(2) Acetone
(3) Benzaldehyde
(4) Acetophenone 21. Which is the IUPAC name of:
(1) 3-chloro-2, 2-diethylpropane
(2) I-chloro-2,2-diethyl-2-methylethane
(3) I-chloro-2-ethyl-2-methylbutane
(4) I-chloro-2,3-diethylopropane 22. Which is the compound obtained by heating
salicylic acid with phenol in the presence of phosphorus oxychloride?
(1) Salol
(2) Oil of Wintergreen
(3) o-Chlorobenzoyl chloride
(4) Aspirin 23. The compound used as a preservative for food products such as
tomato ketchup and fruit juices is
(1) Sodium acetate
(2) Sodium benzoate
(3) Formic acid
(4) Sodium salicylate 24. Starting with three different amino acid molecules how
many different tripeptide molecules could be formed?
(1) 6
(2) 12
(3) 9
(4) 3 25. Amides can be converted into amines by:
(1) Carbylamine reaction
(2) Sandmeyer reaction
(3) Dehydration reaction
(4) Hofmann's reaction 26. Which of the following tests is not used for testing
proteins?
(1) Ninhydrin test
(2) Millon's test
(3) Molisch's test
(4) Biuret test 27. A distinctive and characteristic functional group of fats is:
a peptide group
(1)
(2) an ester group
(3) an alcoholic group
(4) a ketonic group 28. Which one is a broad spectrum drug?
Chloramphenicol
(1)
(2) Chloroquine
(3) chloroxylenol
(4) Plasmoquine 29. Indigestive carbohydrate which is also a constituent of our diet
is:
(1) Starch
(2) Cellulose
(3) Galactose
(4) Maltose 30. In the precipitation of third group of basic radicals in qualitative
analysis, NH4CI is added before adding NH4OH to
CI- ions
(1) increase the concentration of
(2) increase the concentration of NH4+ ions
(3) Keep the pH constant
(4) Decrease the concentration of OH- ions 31. The catalyst used in Ziegler process
for polyethylene manufacture:
tetrachloride
(1) consists of aluminium triethyl and titanium
(2) consists of aluminium chloride and titanium dioxide
(3) is vanadium pentoxide
(4) is finely divided nickel. 32. For the reaction H2(g) +1/2 O2(g) 
H=285.8 kJ mol-1; S =- 0.163 kJ mol-1 k-1 what is the value of free energy change at
270C for the reaction?
(1) +334.7 kJ mol-1
(2) -236.9 kJ mol-1
(3) -281.4 kJ mol-1
(4) -334.7 kJ mol-1 33. Amines behave as:
(1) Lewis bases
(2) Aprotic acids
(3) Amphoteric compounds
(4) Lewis acids 34. An alkane has a C/H ratio (by mass) of 5.1428. Its molecular
formula is:
(1) C7H16
(2) C5H12
(3) C6H14
(4) C8H18 35. Schotten-Baumann reaction can be used to synthesise an
alcohol
(1)
(2) ester
(3) ether
(4) acid 36. If two moles of an ideal gas at 546 k occupies a volume of 44.8 litres, the
pressure must be:
(1) 1 atmosphere
(2) 4 atmospheres
(3) 3 atmospheres
(4) 2 atmospheres 37. At what temperature will the R.M.S. velocity of sulphur
dioxide be the same as that of oxygen at 298 k?
(1) 273 k
(2) 596 k
(3) 398 k
(4) 298 k 38. The number of possible different codons is:
(1) 48
(2) 16
(3) 64
(4) 32 39. The molarity of a solution containing 5 g of NaOH in 250 cm3 solution is:
(1) 0.5
(2) 0.1
(3) 2
(4) 1 40. The atomic number of an element is 17. The number of orbitals containing
electron pairs in the valance shell is:
(1) Six
(2) Two
(3) Eight
(4) Three 41. The following one isotope is used in cancer therapy, It is
(1) Ca-40
(2) Co-60
(3) Na-24
(4) Co-58 42. Fluorine, chlorine, bromine and iodine are placed in the same group
(17) of the periodic table, because:
(1) they are electronegative
(2) they have 7 electrons in the outermost shell of their atom
(3) their atoms are generally univalent
(4) they are non-metals 43. The element with the highest first ionisation energy
among the following is:
(1) Carbon
(2) Oxygen
(3) Nitrogen
(4) Boron 44. Carbon is benzene molecule is:
(1) sp2 hybridised
(2) sp2 hybridised
(3) not hybridised
(4) sp hybridised 45. 10 cm2 solution of H2O2 on decomposition gives 150 cm3 of O2
at S.T.P. The H2O2 has the volume strength:
(1) 10 vol.
(2) 15 vol
(3) 30 vol
(4) 20 vol 46. H3PO2 is the molecular formula of an oxyacid of phosphorus. Its name
and basicity respectively are:
(1) Hypophosphorus acid and one
(2) Phosphorous acid and two
(3) Hypophosphorus acid and two
(4) Metaphosphoric acid and one 47. Acetylene reacts with 20% H2SO4 containing
1% HgSO4 to give:
(1) HCHO
(2) CH2=CH2
(3) C2H5HSO4
(4) CH3CHO 48. Benzene hexochloride is a/ an:
(2) Insecticide
(1) Catalyst
(3) Analgesic
(4) Antiseptic 49. The green house effect is caused by:
(1) CO2
(2) NO2
(3) NO
(4) CO 50. A reagent used to test for unsaturation in alkenes is:
Cu2CI2
(1) Ammoniacal
(2) Ammoniacal Ag NO2
(3) Solution of Br2 in CCI4
(4) Conc. H2SO4 51. When 50 cm2 of a strong acid is added to 50cm3 of an alkali, the
temperature rises by 50C. If 250 cm3 of each liquid are mixed, the temperature rise would
be:
(1) 200C
(2) 50C
(3) 100C
(4) 250C 52. Consider the following reaction in an automobile : 2 C8H18(g) +25 O2
(g) 16 CO2(g) + 18 H2O(g)
(1) -,+,+
(2) +, - +
(3) +, +, (4) -,+,- 53. H2(g) +1/2 O2 (g) H298k=-285.8 kJ The molar enthalpy of
vapourisation of water at 1 atm and 250C is 44 kJ. The standard enthalpy of formation of
1 mole of water vapour at 250 C is:
(1) -329.8 kJ
(2) -241.8 kJ
(3) 241.8 kJ
(4) 329.8 kJ 54. 0.6 mole of NH3 in a reaction vessel of 2 dm3 capacity was brought
to equilibrium. The vessel was then found to contain 0.15 mole of H2 formed by the
reaction.
2NH3(g)  N2(g)+3H2(g)
Which of the following statements is true?
equilibrium is 0.25 mole per dm2
(1) The concentration of NH3 at
(2) 0.15 mole of the original NH3 had dissociated at equilibrium
(3) 0.55 mole of ammonia is left in the vessel
(4) At equilibrium the vessel contained 0.45 mole of N2. 55. In the reaction
H2O/H+
CH3CN +  A

B
the compound H is
(1) ethyl alcohol
(2) acetic acid
(3) acetone
(4) acetaldehyde 56. Le Chatelier's principle is applicable only to a:
Heterogeneous reaction
(1)
(2) System in equilibrium
(3) Irreversible reaction
(4) Homogeneous reaction 57. Which among the following is a false statement?
(1) Rate of zero order reaction is independent of initial concentration of reactant.
(2) Half life of a third order reaction is inversely proportional to the square of initial
concentration of the reactant.
(3) Molecularity of a reaction may be zero of fraction
(4) For a first order reaction t1/2= 0.693/k 58. For reaction the activation energy Ea =
0 and the rate constant k = 3.2 x 106 s-1 at 300 K . What is the value of the rate constant at
310 K?
(1) 6.4 x 106 s-1
(2) 6.4 x 1012 s-1
(3) 3.2 x 106 s-1
(4) 0 59. Certain bimolecular reactions which follow first order kinetics are called:
(1) unimolecular reactions
(2) first order reactions
(3) Pseudo unimolecular reactions
(4) bimolecular reactions 60. Which one of the following statements regarding
catalysts is not true?
(1) A catalyst can initiate a reaction
(2) A catalyst does not alter the equilibrium in a reversible reaction
(3) Catalysts are sometimes very specific in respect of reaction
(4) A catalyst remains unchanged in composition and mass at the end of the reaction