Metals and Non-metals MCQ Questions and Answers Quiz

61. Metals react with water to form oxides or hydroxides and ___

  1. Hydrogen
  2. Oxygen
  3. Carbon dioxide
  4. Carbon monoxide

62. Metal which does not react even with steam

  1. Potassium
  2. Iron
  3. Magnesium
  4. Silver

63. Which of the following is not a heavy metal?

  1. Cu
  2. Hg
  3. Pb
  4. K

64. Gold is mixed with copper to

  1. Make gold soft
  2. Make gold hard
  3. Make gold more yellowish
  4. Give gold luster

65. Metal surface reacts with oxygen and the moisture present in air and get coated with

  1. Oxide
  2. Carbonate
  3. Hydroxide
  4. Any of these

66. Eating away of metals by water, oxygen and other chemicals is called

  1. Carbonization
  2. Amalgamation
  3. Oxidation
  4. Corrosion

67. Total world production of iron destroyed by rusting is about

  1. 10%
  2. 50%
  3. 15%
  4. 40%

68. Corrosion of metals can be prevented when contact between metal and _____is cut off.

  1. Nitrogen
  2. Hydrogen
  3. Oxygen
  4. Carbon

69. Iron is galvanized when it is dipped in

  1. Molten zinc
  2. Molten copper
  3. Molten carbon
  4. Molten gold

70. The process of giving a coating of _____ to copper or brass is called tinning.

  1. Zinc
  2. Copper
  3. Tin
  4. Iron
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MCQ Multiple Choice Questions and Answers on Metals and Non-metals

Metals and Non-metals Question and Answer