Chemistry Questions Answers

• 92. How many different oxides are formed by nitrogen ?

  1. two
  2. three
  3. four
  4. five

  Answer And Explanation

  Answer: Option A

  Explanation:

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• 93. The major component used in preparation of different types of glasses is :

  1. Sodium borate
  2. Sodium silicate
  3. Silica
  4. Calcium silicate

  Answer And Explanation

  Answer: Option C

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• 94. Acid rain is due to air pollution by ?

  1. Carbon dioxide
  2. Carbon monoxide
  3. Methane
  4. Nitrous oxide and Sulphur dioxide

  Answer And Explanation

  Answer: Option D

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• 95. Acids taste

  1. Sour
  2. Sweet
  3. May be both
  4. None of both

  Answer And Explanation

  Answer: Option A

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• 96. What is metallurgy ?

  1. process of extracting metal in pure form from its ore.
  2. process of creating alloys of metals.
  3. process of making metals live long.
  4. None of above.

  Answer And Explanation

  Answer: Option A

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• 97. Oxides of metals are alkaline.

  1. TRUE
  2. FALSE

  Answer And Explanation

  Answer: Option A

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• 98. What is used to avoid melting of ice ?

  1. Gelatine
  2. Butane
  3. Methane
  4. Any acid

  Answer And Explanation

  Answer: Option A

  Explanation:

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