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Byju's Answer
Standard VII
Chemistry
Constituents of Air
The component...
Question

The components of air which are harmful to living beings are:

A
Nitrogen and carbon dioxide.
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B
Dust and water vapour.
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C
Dust and smoke.
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D
Smoke and water vapour.
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Solution

The correct option is B Dust and water vapour.
(c) Dust and smoke.

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Constituents of Air
Standard VII Chemistry
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