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Chemistry – General – LS

Chemistry – Set 7

Dear ! This is Chemistry – Set 7  Quiz and it contains 100 questions.

Happy Learning!

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1. Which of the following gases is most toxic ?

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2. The chemical name of baking soda is

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

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

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5. Normal rainwater has a pH level of

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

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7. Which one of the following is most acidic?

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8. Philosopher’s wool is chemically

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

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10. Chemical name of common salt is

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11. Chemical name of bleaching powder is :

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12. If water smells bad, then that odour can be removed by adding

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

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14. The BOD values of water indicate the

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

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16. Muscle fatigue is caused by the accumulation of :

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17. Litmus is obtained from

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18. Milk tastes sour when kept in the open for sometime due to the formation of

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

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20. Sour milk contains

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21. Curd is sour due to presence of

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22. The gas dissolved in water that makes it basic is :

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23. Formic acid is produced by

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24. Aerated water contains

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25. Ultraviolet rays can be used in water treatment as

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

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

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28. Milk tastes sour when it is left in open for some time. This happens due to the formation of

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29. One property of ammonia is

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30. In which of the following states maximum iron ore is found ?

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

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

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33. Where does the oxygen that keeps us alive come from?

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34. Ammonial is a mixture of

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35. Which one of the following is extensively used for sterilizing water ?

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36. 1 carat of diamond is equal to

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37. Lead in water can cause

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

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39. Which acid is used in Lead storage battery?

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40. Potassium Permanganate is used for purifying drinking water, because________

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41. The alkaloid naturally found in coffee, cocoa and cola nut is

 

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42. Which of the following is used as filler in tyre of rubber ?

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

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44. In which of the following substances all carbon atoms are quaternary in nature ?

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45. Saline soil contains

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

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47. The chemical name of ‘Common salt’ is

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

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

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50. Magnalium is an alloy of

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

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52. The pH of lemon juice is expected to be

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53. Sodium Carbonate is commonly known as

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

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55. In sugar solution,

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56. Citric acid is present in free form in

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

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58. Which one of the following is used for dating very old objects of archaeological importance?

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59. What is the covalency of nitrogen in ammonia molecule

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60. Rock salt is a mineral containing

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

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62. In chemical terms, what are alums used for purifying water for drinking purposes ?

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

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64. Brine refers to :

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65. ________ is used for making vinegar.

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66. The acid used in lead storage cells is

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67. The chemical formula of the laughing gas is

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68. Which is known as carbolic acid?

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69. Carbon footprint can be reduced by

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70. When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is

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71. pH value between 6.5-7.5 makes the soil

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72. Assertion (A) : Synthetic detergents can lather when in hard water. Reason (R) : Synthetic detergents form soluble calcium and magnesium salts with hard water.

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73. The open “Sigrees” or coal stoves often require fanning to sustain burning because of

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

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

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

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77. Vinegar is ________ .

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78. Which of the following has pH value 7?

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79. 24 carat of diamond is equal to

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80. Which of the following is used as a lubricant in heavy machines?

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81. pH scale ranges from

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82. Sea water is saltier than rain water because

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83. Sweat contains water and ________

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84. Table salt gets moist during rainy season because

 

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

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86. Drinking soda is

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87. What is ‘milk of magnesia’ chemically?

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

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89. The unit to measure the flow of water is

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90. The metallic constituents of hard water are :

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91. The pH of human blood is between

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92. Which one is a soluble salt in H2O?

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

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

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95. Antacids are found in drugs that give relief to

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96. Tar roads get damaged if there is

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97. Basicity of boric acid, H3BO3 is

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98. Magnetite is

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

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100. What is the atomic number of Oxygen?

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