Question

Air is a mixture.

Answer 1

Air

• A mixture contains several elements, compounds or both in any proportion.
• Air is a mixture of many substances. Air contains oxygen, nitrogen, carbon dioxide, dust, water vapours and smoke, etc.
• The composition of air is not constant everywhere. It varies from place to place and time to time.
• The air at higher altitudes contains less oxygen as compared to the plains.
• During the rainy season, the amount of moisture in the air is more than in summers as air contains more water vapour.
• The composition of a compound is fixed and does not vary from place to place and time to time.
• This proves that air is a mixture and not a compound.