24 (a) State whether the following statements are true or false.
Air consists of a single substance.

True

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False

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Solution

The correct option is B False
Air is a mixture of different gases
It is composed of 78% Nitrogen, 21% Oxygen, 1% Carbon dioxide, and a small number of other gases such as Argon, Helium, etc.
Thus, the air is a mixture of gases.
Final answer: The given statement is false.

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