Quiznetik

Chemistry | Set 6

1. Sour taste of lemon is due to the presence of which of the follow-ing?

Correct : A. Citric acid

2. Ethylene is a molecule.

Correct : D. nonpolar

3. If water smells bad, then that odour can be removed by adding –

Correct : C. activated carbon

4. The basic process taking place in nuclear reactors is -

Correct : B. Fission

5. Malathion is a/an -

Correct : A. insecticide

6. Glycol is used to manufacture which of the following?

Correct : C. Terylene

7. During fermentation of sugar, the compound which is always formed is –

Correct : B. Ethyl Alcohol

8. Warming Ammonium chloride with sodium hydrochloride in a test tube is an example of –

Correct : A. Open system

9. Laughing gas is –

Correct : B. Nitrous oxide

10. Calcium salts used as fertilizer is –

Correct : D. Calcium Sulphate

11. Which one of the following has a maximum tendency to form M^3 ion?

Correct : A. N

12. Copper substances when exposed to air gains a green coating due to the formation of:

Correct : B. CuCO3 Cu(OH)2

13. Bagasse, a by-product of sugar manufacturing industry, is used for the production of -

Correct : B. Paper

14. Bleaching powder is made from -

Correct : D. Lime and Chlorine

15. Which one of the following does not contain silver?

Correct : C. German silver

16. An important green-house gas other than methane being produced from the agricultural fields is–

Correct : A. Nitrous oxide

17. Which one of the following contains maximum percentage of carbon?

Correct : A. Cast iron

18. Whichof the following appeared to be with a significant potential for accumulation through food chains?

Correct : A. DDT

19. The moderator used in a nuclear reactor is –

Correct : C. Ordinary water

20. Which among the following is a carbohydrate?

Correct : B. Cane-sugar

21. Which among the following metals provides amphoteric oxide?

Correct : C. Aluminium

22. Iodine can be separated from a mixture of Iodine and Potassium Chloride by –

Correct : C. sublimation

23. Identify the metal which is non toxic in nature.

Correct : B. Gold

24. Bakelite is a copolymer of Phenol and -

Correct : A. Formaldehyde

25. What is a mixture of potassium nitrate powdered charcoal and sulphur called?

Correct : D. gun powder

26. Which among the following metal is used for galvanization?

Correct : A. Zinc

27. The lightest radioactive element is -

Correct : C. technetium

28. The chemical used in developing photographic films is –

Correct : A. silver bromide

29. Hard water and soft water can be distinguished by using –

Correct : C. detergent

30. Gamma rays are -

Correct : C. High energy electromagnetic

31. The name of unreactive gas is –

Correct : C. Nitrogen

32. Heavy water is so called because it contains -

Correct : A. Heavy isotope of hydrogen

33. Heating of a ore below its melting point in the absence of air is known as –

Correct : B. Calcination

34. The most electronegative element among the following is –

Correct : A. Fluorine

35. The quality of petrol is expressed in terms of –

Correct : C. Octane number

36. The percentage of Nitrogen in Air is -

Correct : C. 78.03

37. Energy is continuously generated in the sun due to               .

Correct : A. Nuclear fusion

38. The apparatus used to test acidity of aqueous solution is -

Correct : A. pH meter

39. Chemical formula of washing soda is -

Correct : C. Na2CO3.10H2O

40. Which one of the following elements is an example of noble gas?

Correct : D. Helium

41. Which of the following elements does not exhibit natural radioactivity?

Correct : C. Aluminium

42. Which of the following chemicals is responsible for depletion of ozone layer in the atmosphere?

Correct : A. Chlorofluorocarbons

43. In which of the following states maximum iron ore is found?

Correct : B. Fe₂O₃

44. The deterioration of a metal by an electrochemical process is commonly termed as –

Correct : B. Corrosion

45. The chief constituent of natural gas is:

Correct : A. Methane

46. The source of energy that causes the least global warming is –

Correct : C. Natural Gas

47. Which of the following is not a donor atom?

Correct : D. Aluminium

48. Formic acid is produced by –

Correct : C. Red ants

49. Which one of the following forms of phosphorus is most reactive?

Correct : B. White phosphorus

50. Rcmoval of carbon particles from air involves the principle of –

Correct : C. Electrophoresis

51. Which of the following acts as best adsorbent?

Correct : C. Activated Coconut Charcoal

52. Which of the following is used as no coating for Cooking utensils?

Correct : D. (4)Teflon

53. The least preferred technique in the disposal of Municipal Solid Waste is -

Correct : D. Bricketting

54. Which is the heaviest metal among the following?

Correct : A. Gold

55. Which of the following is a commercial source of energy?

Correct : D. Natural gas

56. Which of the following is used to make light weight, but strong plastic?

Correct : C. Polyvinyl Chloride

57. Which gas emitted by power stations causes acid rain?

Correct : B. Sulphur dioxide

58. Heavy water is –

Correct : D. Deuterium oxide

59. Chemical composition of heavy water is –

Correct : D. D2O

60. The most abundant element is -

Correct : C. Oxygen

61. Aluminium salt commonly used to stop bleeding is -

Correct : B. Aluminium sulphate

62. Hydrochloric acid is also known as -

Correct : C. Muriatic acid

63. The inert gas used as beacon light is -

Correct : D. Ne

64. Who proposed first atomic theory?

Correct : C. John Dalton

65. The ultrapure metal is obtained by -

Correct : C. zone refining

66. Antacids are found in drugs that give relief to -

Correct : B. Stomach ache

67. Heavy water is -

Correct : C. Deuterium oxide

68. Mark the compound which possesses ionic, covalent and coordinate bonds.

Correct : A. NH4C1

69. Which of the following is the lightest metal?

Correct : C. Lithiu

70. Fuse wire is made of an alloy of             .

Correct : C. Tin and Lead

71. The nuclear particle having no mass and no charge, but only spin is -

Correct : B. neutrino

72. In a period from Li to F, ionisation potential –

Correct : A. cannot be predicted

73. A nibble is equal to –

Correct : B. 4

74. The non-metal found in the liquid state is –

Correct : A. bromine

75. Which of the following metals does NOT react with oxygen even at a high temperature?

Correct : B. Silver

76. Acetic acid is know as -

Correct : D. Vinegar

77. Which of the following gas is used in cigarette lighters?

Correct : A. Butane

78. Which one among the following is-used as a moderator in nuclear reactors?

Correct : C. Heavy water

79. The chemical name of baking soda is -

Correct : B. Sodium bicarbonate

80. Chemical name of common salt is –

Correct : A. Sodium Chloride

81. Nitrogen in water is commonly found in the form of -

Correct : B. Nitrate

82. Chemical name of Gammaxane is -

Correct : D. Benzene hexachloride

83. The acid which fails to liberate carbon dioxide from sodium bicarbonate is :

Correct : D. Sulphuric acid

84. Which one of the following is not coal variety?

Correct : C. Dolomite

85. Which of the following is the strongest base in aqueous solution?

Correct : A. Diethylamine

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

Correct : D. Helium

87. Which of the following substance’s smell is similar to Ethanoic acid?

Correct : C. Vinegar

88. A powerful eye irritant present in smog is –

Correct : C. peroxyacetyl nitrate

89. The most important ore of lead is –

Correct : A. Galena

90. The gas used to dilute oxygen for breathing by deep sea divers is-

Correct : D. Helium

91. Maximum permissible concentration of copper in drinking water in mg/L is -

Correct : C. 1.0

92. Which of the following is biode- gradable?

Correct : A. Paper

93. The ‘Green House effect' is produced due to the presence of excess amount of –

Correct : D. Methane

94. Which of the following acids serves as an electrolyte in a lead storage battery?

Correct : A. Sulphuric acid

95. Which of the following is a natural polymer?

Correct : D. Starch

96. Which one of the following nonmetals shows allotropy in the liguid state?

Correct : B. Sulphur

97. Atoms of same element having different mass numbers are Called               .

Correct : B. Isotopes

98. Bee sting contains -

Correct : A. An acidic liquid

99. The nuclear reaction in which a heavy nucleus splits into two nuclei of nearly equal mass is called -

Correct : B. Nuclear fission

100. Which element found in all organic compounds?

Correct : A. carbon