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

1. Alpha rays consists of:

2. Type of isomerism in BrCH=CHBr is:

3. Properties of metals are:

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

5. The SI unit of heat + energy is:

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

7. DDT is a:

8. Catalytic oxidation of benzene gives:

9. Major component of natural gas is:

10. Which one is more toxic?

11. Dextose is also called:

12. Arenes are also called:

13. Salts of dichromic acids are:

14. Metallic conduction is also called as:

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

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

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

18. Plasma consists of:

19. Acetic acid is manufactured by:

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

21. Ketones react with sodium nitroprusside alkaline giving precipitate:

22. Cell potential depends upon:

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

24. Oxidation of NO in air produces:

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

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

27. The sum of pH and pOH is:

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

29. The dipole moment of orthochlorobenzene is:

30. Higher alcohols are:

31. Inside every fluorescent lamp there is present a:

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

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

34. Isomers have same properties:

35. Molarity of pure water is:

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

37. The molecule has triple bond in it:

38. All gases can be compressed by:

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

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

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

42. Benzyl acetate has flavour of:

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

44. Covalent compounds mostly exist in the form of:

45. The nature of positive rays depends on:

46. The covalent radius of Cl atom is:

47. Which will cook food more easily:

48. Swedish chemist J. Berzelius determined:

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

50. Which is an inert gas?

51. Which property of oxygen resembles with sulphur?

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

53. Alcohols are:

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

55. The rate of reaction:

56. Biopolymers are:

57. The benzene molecule contains:

58. Vegetable oils are:

59. Borax in water is:

60. An ion having negative charge is called:

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

62. Oxides of metals are:

63. A limiting reactants is one:

64. Buffer capacity is maximum when both components have:

65. Evaporation of water is a:

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

67. X-rays were discovered by:

68. Catalyst changes:

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

70. X-rays have same nature as:

71. Silica contains oxygen by weight:

72. X-rays are attracted towards:

73. Esters are used as:

74. Most stable hydrides is of:

75. Which has least melting point among the given?

76. In exothermic reactions,  ΔH is:

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

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

79. Grape sugar or blood sugar is called to:

80. SN₂ reactions can be best carried out with:

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

82. Kinetic theory of gas was put forward by:

83. Entropy is a measure of ______ system.

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

85. Bakelite is a:

86. Reaction of HNO₃with benzene gives:

87. Metals tends to lose electrons, becoming:

88. Mineral oil is called:

89. The mass of one mole of iodine:

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

91. Formula of cryolite is:

92. A good reservoirs of energy to body is:

93. The dipole moment of water is:

94. Carboxyl compounds have functional group:

95. Halokanes are:

96. Pb has inert pair of electrons:

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

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

99. 4-d series is in the period:

100. Mendeleev was a scientist: