100 Important Chemistry Questions Quiz Online Basic Info Mcq’s Practice Test with Answers

1. Non-metals tend to gain electrons, becoming:

2. A chemical reaction A →B is said to be in equilibrium when:

3. Kinetic theory of gas was put forward by:

4. Metals tends to lose electrons, becoming:

5. DDT is a:

6. In exothermic reactions,  ΔH is:

7. In an electrolytic cell, the electrons flow from:

8. Hydrides formed between elements with E.N difference greater than 1.8 is:

9. Bakelite is a:

10. Covalent compounds mostly exist in the form of:

11. The force which holds together two or more atoms or ions to form a large variety of compounds is called:

12. Most stable hydrides is of:

13. Halokanes are:

14. Formula of cryolite is:

15. A substance having sigma and pi bond in it gives:

16. Alcohols are:

17. Metallic conduction is also called as:

18. Molarity of pure water is:

19. Oxides of metals are:

20. All gases can be compressed by:

21. In 1913, Mosley used the x-rays to determine:

22. Grape sugar or blood sugar is called to:

23. The dipole moment of water is:

24. The rate of reaction:

25. Inside every fluorescent lamp there is present a:

26. The covalent radius of Cl atom is:

27. Fuel cells are mostly used in space aircrafts as the source of:

28. The dipole moment of orthochlorobenzene is:

29. Cell potential depends upon:

30. Higher alcohols are:

31. Every sample of matter with uniform properties and a fixed composition is called a:

32. Which enzyme is not involved in the fermentation of starch?

33. Alpha rays consists of:

34. The sum of pH and pOH is:

35. Pb has inert pair of electrons:

36. When rate of reaction is restarted by adding a substance, it is said to be:

37. Amino acids (proteins) are identified by the test:

38. Plasma consists of:

39. The nature of positive rays depends on:

40. SN₂ reactions can be best carried out with:

41. Fuel cells are the means by which chemical energy may be converted into:

42. Organic molecules are completely burnt during incineration at temperature (C°)

43. The SI unit of heat + energy is:

44. Reaction of CO₂ with Grignard’s reagent gives:

45. Acetic acid is manufactured by:

46. Mineral oil is called:

47. Catalyst changes:

48. Arenes are also called:

49. Reaction of HNO₃with benzene gives:

50. The difference of potential of two electrodes when concentration of solution is 1 M each at 25°C and 1 atm is called:

51. Biopolymers are:

52. Which property of oxygen resembles with sulphur?

53. The mass of one mole of iodine:

54. A salt "X" is dissolved in water of pH 7, the resulting solution becomes alkaline in nature, salt "X" is made up of:

55. 4-d series is in the period:

56. Half life period of a first order reaction is independent of:

57. Carboxyl compounds have functional group:

58. Which will cook food more easily:

59. Newland said, every eight element repeats properties of element:

60. X-rays have same nature as:

61. Buffer capacity is maximum when both components have:

62. The benzene molecule contains:

63. Borax in water is:

64. Evaporation of water is a:

65. Which is an inert gas?

66. A solution of glucose is 10%. The volume to which 1g mole of it dissolved will be:

67. Properties of metals are:

68. Which has least melting point among the given?

69. The molecule has triple bond in it:

70. Salts of dichromic acids are:

71. What do you call the apparatus generally used for measuring heat changes?

72. The sum of mole fractions of components of a solution is equal to:

73. Which of the following is the simplest form of matter?

74. The reasons for less experimental yield than theoretical yield are reversible reaction, side reaction and:

75. Dextose is also called:

76. Ketones react with sodium nitroprusside alkaline giving precipitate:

77. Which one of the following has the same number of electrons as an alpha particle?

78. Oxidation of NO in air produces:

79. Swedish chemist J. Berzelius determined:

80. X-rays were discovered by:

81. Isomers have same properties:

82. Type of isomerism in BrCH=CHBr is:

83. A pseudo uni-molecular reaction has order of reaction:

84. A limiting reactants is one:

85. Esters are used as:

86. Major component of natural gas is:

87. The e/m value for positive rays is maximum:

88. Which one is more toxic?

89. Entropy is a measure of ______ system.

90. Most of the universe consists of the matter in:

91. Silica contains oxygen by weight:

92. An ion having negative charge is called:

93. X-rays are attracted towards:

94. The pH of 0.001M NaOH aqueous solution is:

95. Vegetable oils are:

96. Thermochemistry is the study of relationship between heat, energy and:

97. A good reservoirs of energy to body is:

98. Catalytic oxidation of benzene gives:

99. Benzyl acetate has flavour of:

100. Mendeleev was a scientist: