Quiznetik

Chemistry | Set 4

1. Which one of the following organic compound is used to remove stains of iron compounds?

Correct : A. Oxalic acid

2. Which one of the following pairs is NOT correctly matched?

Correct : A. Haematite : Copper

3. Which of the following is used for refrigeration?

Correct : C. Freon

4. Electrons in the highest energy level of an atom are called               .

Correct : C. valence electrons

5. Bromine is-

Correct : D. A red liquid

6. Which is not a type of elements?

Correct : C. Metalloids

7. Which among the following is used in making liquors, medicines and as a fuel in aircrafts?

Correct : C. Ethyl alcohol

8. The nuclear particles which are assumed to hold the nucleons together are -

Correct : D. mesons

9. Milk of magnesia is a suspension of –

Correct : C. magnesium hydroxide

10. Which of the following cannot be beaten into Sheets?

Correct : C. Potassium

11. Minamata disease is a nervous disorder caused by eating fish, polluted with

Correct : C. Mercury

12. Which of the following is used to denature ethanol?

Correct : A. Methyl alcohol

13. The charcoal used to decolorize brown sugar solution is

Correct : C. Animal charcoal

14. Which one of the following is used as a sowing agent in the preparation of soft drinks?

Correct : A. Phosphoric acid

15. The coating of a thin layer of zinc on steel or iron objects is known as –

Correct : C. Galvanising

16. Which of the following produces highest amount of energy upon oxidation?

Correct : B. Fat

17. Which of the following substance is highly plastic?

Correct : D. Clay

18. The National Chemical Laboratory (India) is located in –

Correct : D. Pune

19. The major constituent of gobar gas is –

Correct : B. Methane

20. The residue left after extracting juice from sugar beet and sugarcane is called –

Correct : B. bagasse

21. Indane gas is a mixture of which gases?

Correct : B. butane and propane

22. Who among the following discovered electron?

Correct : A. J.J Thomson

23. Nuclear fission is caused by the impact of -

Correct : C. Neutron

24. Acid rain is due to air pollution by -

Correct : D. Nitrous oxide and Sulfur dioxide

25. Milk is a natural –

Correct : B. Emulsion

26. A polymeric substance used to make parachute is –

Correct : B. Viscose

27. The metallic Constituents of hard water are –

Correct : C. Calcium, magnesium and iron

28. The pH of human blood is between –

Correct : B. 7.5-8

29. Which of the following is used as a lubricant in heavy machines?

Correct : D. Graphite

30. What is the element that is in the highest percentage in the composition of the earth?

Correct : B. Oxygen

31. Formation of ozone hole is maximum over –

Correct : C. Antarctica

32. Which of the following is used to iodise common salt?

Correct : C. Potassium iodate

33. Which of the following imparts deep blue colour to glass?

Correct : D. Nickel oxide

34. Which of the following fibres catches fire least?

Correct : B. Cotton

35. Drinking soda is –

Correct : B. Acidic

36. The cathode of a lead storage battery is made up of –

Correct : B. Lead

37. Who is regarded as father of modern chemistry?

Correct : C. Lavoisier

38. Kidney stones are mainly formed by which of the following compound -

Correct : D. Calcium oxalate

39. What is the principal ore of aluminium?

Correct : D. Bauxite

40. Which gas is used as fire extinguisher?

Correct : A. Carbon dioxide

41. The isotope of Uranium used in atomic reactors is –

Correct : A. U^235 (2)

42. Which one of the following is not a radioactive element?

Correct : D. Cadmium

43. The anode in a dry cell consists of –

Correct : B. Zinc

44. Aspirin is common name of –

Correct : D. Acetyl Salicylic Acid

45. Carbon monoxide is an inflammable gas. Which one of the following is also inflammable?

Correct : D. Hydrogen

46. The constituents of automobile exhaust that can cause cancer is/are :

Correct : B. Carbon monoxide

47. Hard steel contains –

Correct : B. 0.5 to 1.5 per cent carbon

48. The metals commonly used for electroplating are –

Correct : B. Chromium, Copper and Nickel

49. Which of the following in auto-mobile exhaust can cause cancer?

Correct : B. Carbon monoxide

50. Which one of the following gases has the highest calorific value?

Correct : D. Indane gas

51. Which type of radiations are absorbed by the upper layer of the atmosphere?

Correct : D. Ultraviolet

52. The gas which is mainly responsible for the green house effect is:

Correct : C. Carbon dioxide

53. Which one of the following is used for dating very old objects of archaeological importance?

Correct : D. Carbon-14

54. Which one out of the following helps in burning?

Correct : B. oxygen

55. Name the gas which is used in balloons in the place of hydrogen?

Correct : B. helium

56. The temperature at which both the Fahrenheit and Centigrade scales have the same value is –

Correct : B. -40°

57. The natural resource, known as black gold is –

Correct : A. coal

58. This group of alumino-silicate minerals is widely used in making electrical insulators

Correct : D. Mica

59. Which of the following is a renewable source of energy?

Correct : B. Geothermal powder

60. The rate of change of linear momentum of a body falling freely under gravity is equal to it's

Correct : B. Weight

61. Isobar is produced by the emission of which of the following?

Correct : C. Beta ray

62. The main Constituent of natural gas is

Correct : A. Methane

63. Domestic cooking gas consists mostly of

Correct : B. liquefied butane and isobutene

64. An example of replenshible energy source is —

Correct : D. Biomass

65. Which one of the following minerals is found in pure form?

Correct : B. Copper

66. Bleaching powder is used in drinking water as a/an –

Correct : A. disinfectant

67. The iron ore which contains 72% of iron is –

Correct : A. Magnetite

68. Cement is formed by strongly heating a mixture of –

Correct : B. limestone and clay

69. Glass is a –

Correct : B. supercooled liquid

70. Which one of the following metals does not react with water to produce Hydrogen ?

Correct : B. Cadmium

71. Ozone consists of -

Correct : A. Oxygen only

72. The greenhouse effect is caused by the higher level of which gas in the atmosphere?

Correct : B. Carbon dioxide

73. Which one of the following is extensively used for sterilizing water?

Correct : A. Bleaching powder

74. Which one of the following acids is used in battery?

Correct : C. Sulphuric acid

75. Natural rubber is a polymer derived from -

Correct : C. isoprene

76. Which one of the following is radioactive?

Correct : D. Thorium

77. When iron rusts, its weight :

Correct : B. increases

78. Which of the following is used as filler in tyre of rubber?

Correct : A. Carbon black

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

Correct : C. Elniko

80. The enzyme that converts glucose to ethyl alcohol is –

Correct : C. Zymase

81. Who developed Hydrogen Bomb?

Correct : C. Edward Teller

82. The fundamental particles present in the nucleus of an atom are -

Correct : B. Proton, neutron

83. Bleaching action of moist sulphur dioxide is because of its –

Correct : C. oxidising property

84. The long range potential of nuclear energy in India depends on its reserves of –

Correct : B. uranium

85. Which of the following gases will effuse out of football bladder most wieldy?

Correct : B. H2

86. Silk fibre chemically is –

Correct : C. Protein

87. Milk tastes sour when it is left in open for some time. This happens due to the formation of

Correct : A. Lactic acid

88. The polymerisation of which of the Following is used in manufacturing of polythene in industry?

Correct : D. Ethylene

89. Which of the following substances undergoes chemical change on heating?

Correct : C. Lead nitrate

90. Who proposed first atomic theory?

Correct : C. John Dalton

91. Which one of the following has the highest fuel value?

Correct : A. Hydrogen

92. The major constituent of air is –

Correct : A. nitrogen

93. Cream gets separated out of milk when it is churned. This is due to–

Correct : C. centrifugal force

94. Lime water turns milky when carbon dioxide is passed through it. It is due to the for mation of:

Correct : A. Calcium Carbonate

95. German silver is an alloy of -

Correct : C. zinc, copper and nickel

96. One of the constituents of tear gas is -

Correct : D. Chloropicrin

97. An atomic clock is based on transitions in -

Correct : B. Caesium

98. The temperature of oxyacetylene flame is around –

Correct : B. 3200°C

99. What product is formed when electricity is passed throughan aqueous solution of sodium chloride?

Correct : D. Sodium hydroxide

100. The atmospheric gas that is mainly responsible for Green House effect –

Correct : D. Carbondioxide