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Question
The air we breathe is a pure substance.
The air we breathe is a pure substance.
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Solution
The correct option is B Mixture
A pure substance consists of only one kind of atoms or molecules in it.
Air is a mixture of many gases such as nitrogen, oxygen, carbon dioxide and also water vapour. Hence, it is not a pure substance.
A pure substance consists of only one kind of atoms or molecules in it.
Air is a mixture of many gases such as nitrogen, oxygen, carbon dioxide and also water vapour. Hence, it is not a pure substance.
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