Chemistry
State the utility of -
(a) water vapour
(b) rare or inert gases present in air.
Air
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Answer
(a) Utility of water vapour:
- For controlling evaporation.
- For determining climatic condition.
- For growth of plant and animal.
(b) Utility of rare or inert gases:
- In advertisement signs
- In observation balloons
- In electric lamps.
- In photography
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