Quiznetik

Chemistry | Set 9

1. Non-metallic character increases from

Correct : D. Sodium to Chlorine

2. In organic compounds, nitrogen is estimates by -

Correct : A. Dumas method

3. Which one is the pure element?

Correct : C. sodium

4. The most electropositive elements among the following is :

Correct : A. Cs

5. Which is Known as carbolic acid?

Correct : A. Phenol

6. Atomic explosion is triggered by -

Correct : D. uncontrolled chain reaction

7. Stalactites and Stalagmites form due to the precipitation of :

Correct : A. CaCO3

8. Fullerenes form a class of carbon allotropes. The first one to be identified was -

Correct : B. C-60

9. Which one of the following is found in Vinegar?

Correct : A. Acetic acid

10. The gas produced in marshy places due to decomposition of vegetation is –

Correct : D. Methane

11. The chemical name of "Hypo" commonly used in photography is –

Correct : A. Sodium thiosulphate

12. The process of improving the quality of rubber by heating it with sulphur is called.

Correct : A. Vulcanization

13. Which of the following is not a noble gas?

Correct : A. Hydrogen

14. Piped Natural Gas (PNG) is used for –

Correct : D. Cooking

15. Which of the following elements is not present in stainless steel?

Correct : B. Tungsten

16. Which of the inert gases can form compounds?

Correct : B. Xenon

17. Burning pyrites ore gives out –

Correct : B. Sulphur dioxide gas

18. Milk is -

Correct : A. Emulsion

19. Anaemia is caused because of deficiency of which of the following?

Correct : B. Iron

20. Compound having tetrahedral structure is             .

Correct : C. CH4

21. Which of the following is produced during the formation of photochemical smog?

Correct : D. Ozone

22. Benzene cannot undergo –

Correct : C. Elimination

23. The polymer obtained by the condensation of hexamethylene diamine and adipic acid is –

Correct : A. Nylon 66

24. The antiseptic compound present in dettol is –

Correct : B. Enloroxylenol

25. Amniocentesis is a technique used -

Correct : A. to determine the sex of fetus

26. Bonds formed by the sharing of an electron pair between two atoms are known as -

Correct : A. Covalent bonds

27. The pH of lemon juice is expected to be

Correct : C. less than 7

28. An example of heterocyclic compound is –

Correct : B. Furan

29. The pair of compounds used as anesthetic in medicines –

Correct : B. Nitrous oxide, Chloroform

30. pH scale ranges from –

Correct : C. 0 - 14

31. Glass is -

Correct : A. Super cooled liquid

32. The sum of potential energy and kinetic energy is known as :

Correct : D. Mechanical energy

33. Carborundum is another name of –

Correct : A. Silicon carbide

34. Number of neutrons in an atom of hydrogen is -

Correct : B. Zero

35. Peroxyacetyl nitrate is a –

Correct : D. Secondary pollutant

36. The term 'brown air' is used for –

Correct : B. Photochemical smog

37. Soldering of two metals is possible because of the property of –

Correct : C. Cohesion

38. n electrochemical cell which is used as a source of direct electrical current at constant voltage under standard conditions is called a –

Correct : C. Uninterrupted power supply (UPS)

39. Which method will be employed to test the hardness of water?

Correct : C. Formation of lather with soap

40. J.J. Thomson’s proposed model of action is generally called              model.

Correct : B. Plum and pudding

41. Even after sunset, the air near the Earth's surface continue to receive heat due to –

Correct : B. Terrestrial Radiation

42. Trinitrotoluene is –

Correct : D. used as an explosive

43. Which one of the following polymers is widely used for making bullet proof material?

Correct : D. Polycarbonates

44. The high reactivity of fluorine is due to

Correct : B. its high electro negativity

45. Which of the following is not an example of a biomass energy source?

Correct : D. Atomic energy

46. Which of the following has the highest bond order?

Correct : A. N2

47. is used for making vinegar.

Correct : D. Acetic acid

48. Major portion of the earth's crust is mainly constituted by –

Correct : B. Oxygen and Silicon

49. Cinnabar is an ore/mineral of –

Correct : D. Mercury

50. Which among the following is not a characteristic of transition metals?

Correct : A. Tendency to gain electrons

51. Human nails are made up of -

Correct : D. Keratin

52. Meson particles are found in-

Correct : D. Cosmic rays

53. Nitric acid does not react with -

Correct : A. Gold

54. The process of dissolving an acid or a base in water is a highly -

Correct : A. Exothermic reaction

55. Atomic number is equal to -

Correct : C. Number of protons

56. Which of the following does the Nucleus of an atom consist of?

Correct : A. Protons and neutrons

57. The gas dissolved in water that makes it basic is –

Correct : B. sulphur dioxide

58. The number of hydrogen bonds between guanine and cytosine in DNA is –

Correct : B. 3

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

Correct : B. There is a violent explosion

60. Most commonly used bleaching agent is –

Correct : D. Chlorine

61. The heat value of combustion of Gasoline is -

Correct : D. 47000 kJ/kg

62. Who developed the model of atomic structure?

Correct : A. Bohr and Rutherford

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

Correct : A. Silver nitrate

64. What is a common name for the substance which irritates lachrymal glands?

Correct : A. Tear Gas

65. Diamond is the form of carbon that is -

Correct : A. Crystalline

66. Which of the following does not give benzoic acid on hydrolysis?

Correct : C. benzyl chloride

67. Which of the following gases is known as “Laughing Gas”?

Correct : A. Nitrous oxide

68. Inert gases are -

Correct : C. Chemically uncreative

69. The metallic constituents of hard water are -

Correct : C. Calcium, magnesium and iron

70. Ruby and sapphire are oxides of -

Correct : D. aluminium

71. Water has maximum density at –

Correct : C. 4°C

72. gives hardness to stainless steel.

Correct : C. Carbon

73. The ‘solid waste’ is also known as -

Correct : C. Sludge

74. Which of the following has pH value 7?

Correct : A. Pure Water

75. Chemical name of vinegar is -

Correct : B. Acetic acid

76. Mercury is a –

Correct : B. liquid metal

77. Spirit in contact with body gives cool sensation because it is –

Correct : C. highly volatile

78. Natural rubber is the polymer of :

Correct : A. Isoprene

79. In addition to hydrogen, the other abundant element present on Sun’s surface is -

Correct : A. Helium

80. If lime water is kept in the air, it turns milky due to presence of –

Correct : A. Carbondioxide

81. Heavy metal pollution of water is caused by:

Correct : A. Paints

82. Nitrogen forms a variety of compounds in all oxidation states ranging from -

Correct : A. -3 to + 5

83. The next higher homologue of C6H14 is -

Correct : D. C7H16

84. Biogas majorly contains -

Correct : B. Methane

85. The sewage obtained from water closets and urinals is known as –

Correct : A. Sanitary waste

86. In organic compounds, nitrogen is estimated by –

Correct : D. Dumas' method

87. The hottest part of the gas flame is known as –

Correct : C. luminous zone

88. What is dry ice?

Correct : A. Solid Carbon dioxide

89. Threshold limit value of copper in the atmospheric air is -

Correct : C. 1.0 mg/m3

90. Silicone is a polymer of –

Correct : C. Dialkyl dichloro silane

91. Which is not an anasthetic agent in surgical operations?

Correct : D. Acetone

92. Brass is an alloy of :

Correct : C. Cu and Zn

93. Iron is prevented from rusting by coating with zinc. This process is called as –

Correct : A. Galvanisation

94. Which of the following is the maximum number of electrons that can be present in M- shell?

Correct : C. 18

95. Chemical that is used in photography -

Correct : B. Silver bromide

96. Sodium Carbonate is commonly known as -

Correct : B. Washing Soda

97. When a bond is formed between two atoms, the energy of the sys-tem will –

Correct : C. remain the same

98. The ore of Aluminium is -

Correct : B. Bauxite

99. Which of the following molecules or ions involved in the Nitrogen Cycle do not contain oxygen atom?

Correct : B. Ammonia

100. Which of the following is used as a coolant in nuclear reactors?

Correct : C. Liquid sodium