1. Gamma rays are

A. high energy electrons

B. low energy electrons

C. high energy electro-magnetic waves

D. high energy positrons

2. Which is the most abundant metal in the earth's crust?

A. Fe

B. Al

C. Ca

D. Na

3. Which one does not give a precipitate with excess of NaOH?

A. ZnSO₄

B. FeSO₄

C. AgNO₃

D. HgCl₂

4. What volume of CO₂ will be liberated at NTP of 12 gm of carbon is burnt in excess of oxygen?

A. 11.2 litres

B. 22.4 litres

C. 2.24 litres

D. 1.12 litres

5. Which base is found only in nucleotides of RNA?

A. Adenine

B. Uracil

C. Guanine

D. Cytosine

6. Ascorbic acid is the chemical name of

A. Vitamin B₆

B. Vitamin A

C. Vitamin C

D. Vitamin D

7. A hydrocarbon has carbon and hydrogen. Its molecular weight is 28. Its possible formula would be

A. C₃H₆

B. C₂H₄

C. CH₄

D. C₄H₈

8. The first Noble Prize in chemistry was given to

A. Faraday

B. Cnrizzaro

C. Mendeleevs

D. Moseley

9. Four different colloids have the following gold number. Which one has its most effective action?

A. 10

B. 30

C. 20

D. 40

10. Which is an example of thermosetting polymer?

A. Polythene

B. PVC

C. Neoprene

D. Bakelite

11. The number of unpaired electrons in ferrous ion is

A. 3

B. 2

C. 4

D. 5

12. Strongest reducing agent is

A. K

B. Mg

C. Al

D. Ba

13. Which of the following is man-made element?

A. Ra

B. U

C. Np

D. C – 4

14. Which of the following statements is/are correct?

A. Boiling point of alkylhalide is greater than its corresponding alkane

B. In water, solubility of CH₃OH > C₂H₅OH > C₆H₅OH

C. Aniline is a weaker base than NH₃

D. All of the above

15. Which amine of the following will not answer Carbylamine reaction?

A. Ethylamine

B. Methylamine

C. Dimethylamine

D. Phenylamine

16. Tollen's reagent can be used to detect

A. (CH₃)₂ – CHOH

B. CH₃ – CO.CH₃

C. CH₃CH₂CHO

D. CH₃OCH₃

17. Glycerol on heating with Potassium bisulphate yields

A. Acetone

B. Glyceraldehyde

C. Acrolein

D. Propanol

18. Salicylic acid on heating with sodalime gives

A. Benzene

B. Calcium salicylate

C. Benzoic acid

D. Phenol

19. Which one of the following will not give iodoform test?

A. Ethanol

B. Ethanal

C. 2-propanone

D. None of these

20. The rusting of iron is catalysed by

A. Fe

B. O₂

C. Zn

D. H⁺

21. 100 ml of a liquid A was mixed with 25 ml of a liquid B to give non-ideal solution of A-B mixture. The volume of this mixture will be

A. 75 ml

B. 125 ml exact

C. fluctuating between 75 ml and 125 ml

D. close to 125 ml but not to exceed 125 ml

22. IUPAC name of a compound having the formula (CH₃)₃ C - CH = CH₂ is

A. 3, 3 - dimethyl - l - butene

B. 1, 1 - dimethyl - 3 - butene

C. 1,1, 1 - dimethyl - 2 - propene

D. 3, 3, 3 - dimethyl - 1 - l propene

23. Which of the following compounds will be optically active?

A. (OH₃)₂ – CHOH

B. CH₃ - CH₂ - CH₂ - CH₃

C. CH₃ – CHCl.COOH

D. (CH₃)₃.C.Cl

24. The major components of brass are

A. Zn and Sn

B. Cu and Zn

C. Fe and Ni

D. Zn and Fe

25. Lunar castic is

A. Silver Chloride

B. Silver Nitrate

C. Sodium Hydroxide

D. Potassium Nitrate

26. When hot iron is exposed in hot water vapour, the compound formed is

A. FeO

B. Fe₂O₄

C. Fe₃O₄

D. Fe₂ (OH)₂

27. Which of the following halide is not oxidised by MnO₂?

A. F

B. Cl ^-

C. Br ^-

D. I ^-

28. The outermost electronic configuration of the most electronegative element is

A. ns²np³

B. ns²np⁴

C. ns²np⁵

D. ns²np⁶

29. Shape of CO₂ is

A. tetrahedral

B. trigonal

C. bent

D. linear

30. The catalyst used in the manufacture of H₂SO₄ by contact process is

A. Al₂O₃

B. Cr₂O₃

C. V₂O₅

D. MnO₂

31. The composition of the common glass is

A. Na₂O.CaO.6SiO₂

B. Na₂O.Al₂O₃.2SiO₂

C. CaO.Al₂O₃.2SiO₂

D. Na₂O.CaO.Al₂O₃.6SiO₂

32. In a borax lead test, the brown colour is due to

A. Chromium

B.Cobalt

C. Manganese

D. Iron

33. Which of the following is not a fertiliser?

A. Urea

B. Superphosphate of lime

C. Benzene Hexachloride

D. Potassium

34. Which one of the following belongs to representative group of elements in the Periodic Table?

A. Lanthanum

B. Argon

C. Chromium

D. Aluminium

35. Which one of the following is not an isotope of Hydrogen?

A. Tritium

B. Deuterium

C. Ortho-hydrogen

D. None of the above

36. In the reaction I₂ + 2S₂O₃^{2 -} = 2I ^- + S₄O₆^{2 -}, equivalent weight of iodine will be equal to

A. its molecular weight

B. 1/2 of its molecular weight

C. 1/4 the molecular weight

D. twice the molecular weight

37. Which of the following is the most powerful oxidising agent?

A. F₂

B. Cl₂

C. Br₂

D. I₂

38. From the following values of dissociating constants of four acids, which value represents the strongest acid?

A. 2 x 10 ^-2

B. 0.02 x 10 ^-1

C. 3 x 10 ^-3

D. 2.0 x 10⁴

39. In which of the following cases, does the reaction go the farthest for completion?

A. K = 10³

B. K = 10 ^-2

C. K = 10

D. K = 1

40. The reaction which proceeds in the forward direction is

A. Fe₂O₃ + 6HCl ® 2FeCl₃ + 3H₂O

B. NH₃ + H₂O + NaCl ® NH₄Cl + NaOH

C. SnCl₄ + Hg₂Cl₂ ® SnCl₂+ 2HgCl₂

D. 2CuI + I₂ + 4K⁺ ® 2Cu²⁺ + 4KI

41. The substance capable of being drawn into fine wire is called

A. malleable

B. tensile

C. ductile

D. mild

42. The idea that most of the mass of an atom is concentrated in a very small core, i.e., nucleus is given by

A. Amedo Avogadro

B. Rutherford

C. Bohr

D. Henery Mosley

43. Which of the following does contain a co-ordinate covalent bond?

A. N₂H₅⁺

B. BaCl₂

C. HCl

D. H₂O

44. Which of the following contains both covalent and ionic bonds?

A. CCl₄

B. CaCl₂

C. NH₄Cl

D. H₂O

45. Keeping in view the periodic law and the periodic table, suggest which of the following elements should have the maximum electronegative character?

A. Oxygen

B. Nitrogen

C. Fluorine

D. Astatine

46. The electronic configuration of element atomic number 37 is

A. (2, 8 ) 3s²3p⁶3d¹⁰4s²4p⁶5s¹

B. (2, 8 ) 3s²3p⁶3d¹⁰4s²5s⁶4p⁵

C. (2, 8 ) 3s²3p⁶4s²3d⁹5s¹4p⁵

D. none of these

47. The pH of 0.1 M solution of a weak acid is 3. What is the value of ionisation constant for the acid?

A. 0.1

B. 10 ^-3

C. 10 ^-5

D. 10 ^-7

48. Pure Aniline is a

A. brown coloured liquid

B. colourless liquid

C. brown coloured solid

D. colourless solid

49. Sulphide ores are generally concentrated by

A. roasting

B. froth floatation

C. reducing by carbon

D. tempering

50. One mole of CO₂ contains

A. 6.02 x 10²³ atoms of C

B. 6.02 x 10²³ atoms of O

C. 18.1 x 10²³ molecules of CO₂

D. 3 gm atom of CO₂

51. The Avogadro Number or a mole represents

A. 6.02 x 10²³ ions

B. 6.02 x 10²³ atoms

C. 6.02 x 10²³ molecules

D. 6.02 x 10²³ entities

52. What is the weight of one molecule of a monoatomic element X whose atomic weight is 36?

A. 6.0 x 10 ^-23 gm

B. 6.02 x 10²³ gm

C. 36 x 10²³ gm

D. 36 x 10 ^-23 gm

53. When a -particles are set through a thin metal foil, most of them go straight through the foil because

A. a -particles are much heavier than electrons

B. a -particles are positively charged

C. a -particles move with high velocity

D. a -particles move with low velocity

54. The reaction, which proceeds in the forward direction, is

A. Fe₂O₃ + 6HCl ® 2FeCl₃ + 3H₂O

B. NH₃ + H₂O + NaCl ® NH₄Cl + NaOH

C. SnCl₄ + Hg₂Cl₂ ® SnCl₂ + 2HgCl₂

D. 2CuI + I₂+ 4K ® 2Cu⁺ + 4KI

55. The first order constant for the decomposition of N₂O₅ is 6.2 x 10 ^-4 sec ^–1. The half-life period for this decomposition in second is

A. 1117.7

B. 111.7

C. 223.4

D. 160.9

56. When the same amount of zinc is treated separately with excess of H₂SO₄ and excess of NaOH, the ratio of volumes of H₂ evolved is

A. 1 : 1

B. 1 : 2

C. 2 : 1

D. 9 : 4

57. Calcium does not combine directly with

A. oxygen

B. nitrogen

C. hydrogen

D. carbon

58. Carbon differs from other elements of its sub-group due to

A. availability of d-orbitals for bonding

B. its limitation to a co-ordination number four

C. its tendency to catenate

D. its unique ability to form multiple bonds

59. Iodine reacts with cold dil. NaOH to give

A. NaI + H₂O + O₂

B. NaI + NaIO + O₂

C. NaI + NaIO + H₂O

D. NaI + NaIO₃ + H₂O

60. The number of isomers for the atomic compound of the formula C₇H₈O is

A. 2

B. 3

C. 4

D. 5

61. An element with atomic number 20 is

A. an alkali metal

B. an alkaline earth metal

C. a halogen

D. a noble gas

62. When supercooled water suddenly freezes, the free energy of the system

A. increases

B. decreases

C. remains same

D. becomes zero

63. The density of neon is highest at

A. STP

B. 0^oC, 2 atm

C. 273°C, 1 atm

D. 273°C, 2 atm

64. Cadmium in a nuclear reactor acts as

A. nuclear fuel

B. neutron absorber

C. a moderator

D. neutron liberator to start the chain

65. The end product of 4p series

A. ₈₂Pb²⁰³

B. ₉₂Pb²⁰⁷

C. ₈₂Pb²⁰⁸

D. ₈₂Bi²⁰⁴

66. Haemoglobin is a co-ordination compound in which the central metal atom is

A. iron

B. cobalt

C. sodium

D. manganese

67. The element californium belongs to the family of

A. actinide series

B. alkaline earth family

C. lanthanide series

D. alkali metal family

68. The coloured discharge tube for advertisements contain

A. argon

B. xenon

C. helium

D. neon

69. Which of the following is the strongest base?

A. PH₃

B. AsH₃

C. NH₃

D. SbH₃

70. Canizzaro reaction is not given by

A. Triethylacetaldehyde

B. Acetaldehyde

C. Benzaldehyde

D. Formaldehyde

71. Which of the following statements is not true for alcohols?

A. Lower alcohols have fiery pungent and strong smell

B. As molecular mass increases, boiling point also increases

C. Lower alcohols are water insoluble and their solubility increases with molecular weight

D. Lower alcohols are water insoluble and their solubility decreases with molecular weight

72. Formaldehyde when heated with CH₃CH₂CH₂MgBr gives

A. Primary alcohol

B. Secondary alcohol

C. Tertiary alcohol

D. Acetone

73. A compound of molecular formula C₃H₈O on oxidation gives a compound of formula C₃H₆O₂. The original compound is

A. Primary alcohol

B. Secondary alcohol

C. Aldehyde

D. Tertiary alcohol

74. The increasing order of size of F^-, Cl ^- , Br ^-, I ^- is

A. I ^- < Br ^- < Cl ^- < F ^-

B. I ^- < Cl ^- < Br ^- < F ^-

C. F ^- < Cl ^- < Br ^- < I ^-

D. Br ^- < Cl ^- < F ^- < I ^-

75. Which of the following series contains only nucleophiles?

A. NH₃, H₂O, AlCl₃

B. NH₃, ROH, H₂O

C. H₂O, H₃O⁺, SO₃

D. None of these

76. The formula of acetonitrite is

A. CH₃COCH

B. CH₃CN

C. CH₃CH₂CN

D. CH₃CONH₂

77. The IUPAC name of CH₃CONH₂ is

A. Propionaldehyde

B. Acetamide

C. Ethanamide

D. Ethylamine

78. The rate of reaction increases with temperature because

A. threshold energy increases

B. kinetic energy of molecules increases

C. effective collision increases

D. none of the above

79. If the graph of concentration of A versus time for completion of reaction is a straight line, then the order of the reaction is

A. zero

B. second

C. first

D. third

80. The decomposition of hydrogen peroxide 2H₂O₂ ® 2H₂O + O₂ is

A. zero order reaction

B. first order reaction

C. second order reaction

D. third order reaction

81. The half-life period of a first order process is 1.6 min ^-1. It will be 90% complete in

A. 0.8 min

B. 3.2 min

C. 5.3 min

D. 1.6 min

82. Which of the following is an electrophile?

A. AlCl₃

B. CN ^-

C. NH₃

D. CH₃OH

83. Molarity of a solution is the number of

A. moles of solute per litre of solution

B. moles of solute per 100 gm of the solution

C. gram molecular weight of solute dissolved per litre of the solution

D. gram equivalents of solute dissolved per litre of solution

84. The hybridisation in PF₃ is

A. sp³

B. sp²

C. dsp³

D. d²sp³

85. Which of the following is present in DNA?

A. Deoxyribose

B. Starch

C. Riboflavin

D. None of these

86. Propyne when treated with H₂SO₄ in presence of HgSO₄ gives

A. Acetone

B. Propionaldehyde

C. Acetaldehyde

D. Propanoic acid

87. The general formula for alkyne is

A. C_nH_{2n + 2}

B. CnH_2n

C. C_nH_{2n - 2}

D. C_nH_n

88. Mesotartaric acid is optically inactive due to the presence of

A. molecular symmetry

B. molecular asymmetry

C. external compensation

D. two asymmetric carbon atoms

89. Which of the following electronic configuration in the outermost shell is characteristic of alkali metals?

A. (n - 1) s²p⁶ns²s¹

B. (n - l) s²p⁶d¹⁰ns¹

C. (n - l) s²p⁶ns¹

D. ns²p⁶d¹

90. Lead chloride is soluble in

A. cold water

B. hot water

C. HCl

D. acetic acid

91. When a copper wire is placed in a solution of silver nitrate, the solution acquires blue colour. This is due to the formation of

A. a soluble complex of copper with AgNO₃

B. Cu⁺ ions

C. Cu²⁺ ions

D. Cu²⁺ by reduction of Cu

92. The pyrites are heated with hydrochloric acid. The solution so obtained will give blood red colour with

A. K₄Fe(CN)₆

B. KCN

C. K₃Fe(CN)₆

D. KSNC

93 The ignition mixture in alumino thermite process contains a mixture of

A. magnesium powder and BaO₂

B. magnesium powder, aluminium powder and BaO₂

C. magnesium and aluminium powders

D. magnesium and aluminium oxides

94. One of the most important use of quick lime is

A. as a purgative

B. drying gases and alcohols

C. in bleaching silk

D. dyeing cotton

95. In preparing Cl₂ from HCl, MnO₂ acts as a/an

A. dehydrating agent

B. reducing agent

C. catalytic agent

D. oxidising agent

96. Seaweed is an important source of

A. chlorine

B. iodine

C. fluorine

D. bromine

97. Nitrates of all metals are

A. unstable

B. stable

C. coloured

D. soluble

98. Ostwald’s method is used for manufacture of

A. HNO₃

B. NO₂

C. NO

D. P₂O₅

99. Magnesium reacts with acids producing hydrogen and corresponding magnesium salts. In such reactions, magnesium undergoes

A. oxidation

B. reduction

C. neither oxidation nor reduction

D. simple dissolution

100. An acidic buffer solution can be prepared by mixing solution of

A. ammonium chloride and HCl

B. H₂SO₄ and Na₂SO₄

C. acetic acid and sulphuric acid

D. ammonium acetate and acetic acid