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

2. Maximum permissible concentration of total hardness in drinking water is

3. What is the covalency of nitrogen in ammonia molecule

5. Muscle fatigue is caused by the accumulation of :

7. Sour taste of ‘Coca Cola’ is due to the presence of

11. Sour taste of lemon is due to the presence of which of the following ?

12. A pungent smell often present near the urinals is due to

13. What is the chemical name for ‘Baking Soda’ ?

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

15. Surface water is a better source of drinking water because it is poor in

16. Philosopher’s wool is chemically

20. The amount of chlorine available in water after disinfection is called as

22. 24 carat of diamond is equal to

23. The acid used in lead storage cells is

24. Magnetite is

26. Hardness of the water is commonly measured in terms of

29. pH scale ranges from

31. Litmus is obtained from

35. Chemical name of common salt is

37. A fertile soil is likely to have a pH of

39. Brown stains in vessels and clothes indicate the presence of high quantities of ________ in water.

43. Basicity of boric acid, H₃BO₃ is

44. Ammonial is a mixture of

45. Chemical name of bleaching powder is :

46. The chemical name of baking soda is

47. The substance most commonly used as a food preservative is

48. Rock salt is a mineral containing

49. Which one of the following acids is used in battery ?

50. In sugar solution,

51. The chemical name of ‘Common salt’ is

53. Sodium Carbonate is commonly known as

54. The metallic constituents of hard water are :

58. Normal rainwater has a pH level of

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

62. Which of these acids is not organic in origin?

64. The compound used in prickly heat powder to prevent excessive sweating is

65. The pH of lemon juice is expected to be

67. Iron and manganese present as pollutants in water cannot be removed by________

69. The most pure form of Carbon among the options is

70. Which one is a soluble salt in H₂O?

73. Which of the following has pH value 7?

74. The chemical formula of the laughing gas is

75. Magnalium is an alloy of

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

79. Brine refers to :

80. Antacids are found in drugs that give relief to

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

82. Which of the following is used in making smoke bombs?

83. Which one of the following is most acidic?

85. Which one of the following is a micro-element ?

86. The unit to measure the flow of water is

87. Saline soil contains

88. Which of the following acts as promoter for iron in Haber’s process?

89. The common name for the compound having formal NaOH is

90. Which one of the following is used as preservative for foodstuff ?

91. Which is known as carbolic acid?

92. The water pollution in river is measured by the dissolved amount of

95. Drinking soda is

98. Why is water not suitable for putting out a petrol fire ?

99. Sweat contains water and ________

100. When water itself combines chemically with some element or mineral it is called