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Chemistry – General – LS

Chemistry – Set 6

Dear ! This is Chemistry – Set 6  Quiz and it contains 100 questions.

Happy Learning!

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1. Most commonly used bleaching agent is

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2. Among the following iron ores, the highest percentage of iron content is found in–

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3. Phosphorus is kept in water because

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4. Which one of the following pairs is not correctly matched?

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5. Bauxite is an alloy of which of the following metals ?

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6. Stainless steel is usually made by alloying the steel with

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7. Cinnabar is an ore/mineral of

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8. The weight of 6.023 × 1023 atoms of carbon is

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9. The percentage of nitrogen present in ammonium sulphate is :

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10. The most important ore of lead is

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11. Hard steel contains

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12. Which one is the most reactive gaseous element?

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13. Brass is an alloy of :

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14. Which one of the following contains maximum percentage of carbon ?

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15. Brass is a solution of molten copper in

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16. Which of the following metals occurs in free state ?

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17. Nitrogen in water is commonly found in the form of

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18. Which of the following is a metallic ore ?

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19. The “King of Metals” is :

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20. Which of the following is an iron ore ?

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21. The value of Avogadro Number is

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22. Froth floatation process to concentrate the minerals is applicable to

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23. Sodium is produced by the electrolysis of

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24. Burning pyrites ore gives out

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25. Brass contains

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26. Heating of a ore below its melting point in the absence of air is known as

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27. Freon used as refrigerant is chemically

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28. In electro-refining, the pure metal is deposited on

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29. Which mineral is the ore of aluminium ?

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30. The gas used for artificial fruit ripening of green fruit is

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31. The wire of flash bulbs is made up of

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32. Bauxite is used as raw material by which industry ?

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33. Bleaching powder is prepared by passing :

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34. Which one of the following is not a characteristic feature of alloys?

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35. Which among the following is found in chlorophyll ?

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36. Number of 6.023 × 1023 atoms present in one mole of a gas at STP is

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37. The element which is used for vulcanizing rubber

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38. Aluminium can be purified by

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39. Slag is a name given for

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40. Nitric acid does not react with

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41. Which of the following metals form an amalgam with other metals ?

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42. The percentage of carbon in cast iron is :

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43. Water gas is the mixture of

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44. The substance which does not expand on going from liquid state to solid state is

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45. What is the mass percentage of oxygen in carbon dioxide (CO2)?

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46. Solder is an alloy of

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47. Glycol is added to aviation gasoline because it

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48. The acid which is secreted by the glands in the stomach wall is

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49. Stainless steel is an alloy of

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50. The ore of Aluminium is

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51. Which one of the following vegetable oils is used in the manufacture of paints?

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52. The manufacture of iron from iron ore involves the process of

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53. Which of the following metals is used in Space Crafts to withstand high temperatures ?

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54. Which one of the following mineral does not contain oxygen ?

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55. Galena is a mineral of

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56. Gold dissolves in

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57. Brass is an alloy of

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58. Among the following the hardest metal is

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59. The iron ore which contains 72% of iron is :

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60. The most abundant metal in the Earth’s crust is

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61. Brass is made of

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62. Of the following commonly used materials, the one that is not an alloy is

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63. Which of the following elements is not present in stainless steel?

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64. Copper is refined by

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65. Hydrochloric acid is also known as

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66. Electrolysis of an aqueous solution of copper sulphate using copper electrodes gives

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67. The metal extracted from Bauxite is :

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68. If there is one million Mg2+ ions in MgCl2, how many chloride ions are there?

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69. An alloy used in making heating elements for electric heating device is

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70. ________ gives hardness to stainless steel.

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71. Steel contains

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72. What is the principal ore of aluminium ?

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73. Which one of the following minerals is found in pure form?

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74. Food cans are coated with tin and not with zinc because

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75. Aqua regia is a 1 : 3 mixture, by volume, of

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76. The purest form of Iron is :

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77. Solder metal is an alloy of

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78. Which is the purest form of iron?

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79. Which of the following electrodes is used in strongly alkaline solution?

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80. What material is used to make electric heater coil ?

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81. Percentage of carbon in steel ranges from

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82. Iron is extracted from

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83. Which is the heaviest metal among the following?

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84. Which of the following is used in welding broken pieces of iron rails and machine parts?

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85. Galvanised iron is made by coating iron with

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86. The important metal used with iron to produce stainless steel is

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87. Philosopher’s Wool is

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88. Epsom salt is used

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89. The laws of electrolysis are given by

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90. The aqueous solution of potassium chloride is

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91. What is the mass percentage of carbon in carbon dioxide (CO2)?

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92. Among the following, which is always found in free-state in nature?

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93. Chemical name of Gammaxane is

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94. Brass is a

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95. Bronze is an alloy of

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96. Which is the purest commercial form of iron ?

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97. Chemically ‘Quick Silver’ is known as

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98. The important ore of aluminium is

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99. Which of the following metals has least melting point ?

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100. Bridgmanite is

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