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ICSE Class 7 Chemistry Question 7 of 20

Air & Atmosphere — Question 10

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10
Question

Question 10

State the utility of -

(a) water vapour

(b) rare or inert gases present in air.

Answer

(a) Utility of water vapour:

  1. For controlling evaporation.
  2. For determining climatic condition.
  3. For growth of plant and animal.

(b) Utility of rare or inert gases:

  1. In advertisement signs
  2. In observation balloons
  3. In electric lamps.
  4. In photography