3. The noble gas used in radiotherapy is

5. What happens when a drop of glycerol is added to crushed KMnO₄ spread on a paper ?

7. The major use of sulphur is in the manufacture of

9. “Paramagnetism” is the property of

10. German silver used for making utensils is an alloy of

11. The compounds formed when hydrogen combines with p-block elements are called

12. Hamburger effect is otherwise known as–

13. The presence of ozone in the stratosphere is responsible for

14. A polymeric substance used to make parachute is

16. Bakelite is a co-polymer of Phenol and

17. The buffer action of blood is due to the presence of

23. The polymer used in making plastic crockery is

26. Which of the following partially miscible liquid pairs has both lower and upper critical solution temperature?

29. The strongest oxidizing agent among the following is:

30. Which of the following elements is obtained from seaweeds ?

31. Vulcanized rubber contains sulphur

32. Which of the following alloy is used in making magnet ?

33. German silver is an alloy of

34. Peroxyacetyl nitrate is a

35. Silicone is a polymer of

37. Which of the following is not a method of preparing oxygen?

40. Which of the following substance is highly plastic ?

41. Silver nitrate solution is kept in brown bottles in laboratory because

42. What is Zeolite?

43. Natural rubber is the polymer of :

45. Ultra purification of a metal is done by :

46. The aprotic solvent is

48. Natural rubber is a polymer of

49. The degree of dissociation of an electrolyte depends on

53. Which one of the following is used to restore the colour of old oil paintings ?

55. Ozone layer is present in

56. What is a Bakelite ?

57. Silicon is a

58. Which one of the following does not form oxyacid ?

59. Sulphur dioxide bleaches colouring matter by :

60. Neoprene is prepared by polymerisation of which of the following

61. The heaviest naturally occurring element is:

62. PVC is obtained by the polymerisation of

63. The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is

64. Which of the following is the main compound of voter ink?

66. Carborundum is another name of

68. The substance that is added to make natural rubber strong and more bouncy is

69. Inert gases are

70. Which of the following elements is non-radioactive ?

73. Aluminium chloride is

74. In its reaction with silver nitrate, C₂H₂ shows

75. Which of the following has the highest lattice energy?

76. Silica gel is a

77. Type metal used in printing press is an alloy of

81. Vulcanization of rubber is carried out by adding

82. Which of the inert gases can form compounds?

83. Which one is the most dense liquid from the below?

84. Iodine value is used to estimate

86. The basic chemical building block of natural rubber obtained from trees is

88. The polymer obtained by the condensation of hexamethylene diamine and adipic acid is :

89. Which of the following is used in dating archaeological findings ?

91. German silver, an alloy, does not contain the metal

92. The polymerisation of which often following is used in manufacturing of polythene in industry ?

93. Brass gets discoloured in air due to constant exposure in presence of:

94. Silicon is used in

96. Haloarenes are more stable than haloalkanes due to

97. The unit of ionic product of water (Kw) is :

98. The coordination number of body centered atom in cubic structure is

99. Bleaching action of moist sulphur dioxide is because of its

100. The structure of NaCl crystal is