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

1. Oxidation of NO in air produces:

2. Metals tends to lose electrons, becoming:

3. 4-d series is in the period:

4. Catalytic oxidation of benzene gives:

5. Metallic conduction is also called as:

6. The dipole moment of water is:

7. SN₂ reactions can be best carried out with:

8. Vegetable oils are:

9. Borax in water is:

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

11. Carboxyl compounds have functional group:

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

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

14. The rate of reaction:

15. DDT is a:

16. Entropy is a measure of ______ system.

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

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

19. Biopolymers are:

20. Plasma consists of:

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

22. Halokanes are:

23. Silica contains oxygen by weight:

24. Which is an inert gas?

25. The molecule has triple bond in it:

26. Acetic acid is manufactured by:

27. Molarity of pure water is:

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

29. Type of isomerism in BrCH=CHBr is:

30. The SI unit of heat + energy is:

31. Evaporation of water is a:

32. X-rays have same nature as:

33. Oxides of metals are:

34. Which has least melting point among the given?

35. The covalent radius of Cl atom is:

36. Which one is more toxic?

37. An ion having negative charge is called:

38. Ketones react with sodium nitroprusside alkaline giving precipitate:

39. A good reservoirs of energy to body is:

40. The dipole moment of orthochlorobenzene is:

41. Catalyst changes:

42. Alcohols are:

43. Isomers have same properties:

44. Most stable hydrides is of:

45. In exothermic reactions,  ΔH is:

46. Which property of oxygen resembles with sulphur?

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

48. Bakelite is a:

49. Arenes are also called:

50. Major component of natural gas is:

51. Pb has inert pair of electrons:

52. Salts of dichromic acids are:

53. Benzyl acetate has flavour of:

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

55. The nature of positive rays depends on:

56. Grape sugar or blood sugar is called to:

57. A limiting reactants is one:

58. Properties of metals are:

59. Alpha rays consists of:

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

61. The benzene molecule contains:

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

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

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

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

66. Esters are used as:

67. Cell potential depends upon:

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

69. Kinetic theory of gas was put forward by:

70. The sum of pH and pOH is:

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

72. All gases can be compressed by:

73. Reaction of HNO₃with benzene gives:

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

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

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

77. Formula of cryolite is:

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

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

80. X-rays are attracted towards:

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

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

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

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

85. Inside every fluorescent lamp there is present a:

86. Which will cook food more easily:

87. X-rays were discovered by:

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

89. Dextose is also called:

90. Mineral oil is called:

91. Swedish chemist J. Berzelius determined:

92. The mass of one mole of iodine:

93. Buffer capacity is maximum when both components have:

94. Covalent compounds mostly exist in the form of:

95. Higher alcohols are:

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

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

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

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

100. Mendeleev was a scientist: