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Standard IX

Chemistry

Mixture

Air is compos...

Question

Air is composed of 78% nitrogen and 21% oxygen. Hence, it is a compound.

True

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False

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Solution

The correct option is B False
Air is a mixture and not a compound because:
1) The constituent particles of air are not chemically combined, in a fixed ratio.
2)The components of air can be separated by a physical method.

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Similar questions

Statement I: Air is a mixture of gases, water vapour and dust particles.

Statement II: Air is composed of only one gas that is nitrogen.

Statement III: Air is composed of two gases, nitrogen and oxygen only.

Which of the above statement is incorrect?

Q. Air has three major components: nitrogen, oxygen, and argon. Given that one mole of air at sea level is mole up of

78

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John wanted to know about the composition of air. He asked Sam to explain it to him whether air is composed of a single component or more than one component. To reply this query Sam made the following statements:

Statement I: Air is a mixture of gases, water vapour and dust particles.

Statement II: Air is composed of only one gas that is nitrogen.

Statement III: Air is composed of two gases, nitrogen and oxygen only.

Statement IV: Air is made up of more than one components.

Which of the above statement(s) are correct?

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0.02 g m

of pure nitrogen. Assuming that dry air is composed of

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Air is composed of 78% nitrogen and 21% oxygen. Hence, it is a compound.

The correct option is B FalseAir is a mixture and not a compound because: 1) The constituent particles of air are not chemically combined, in a fixed ratio. 2)The components of air can be separated by a physical method.

The correct option is B False
Air is a mixture and not a compound because:
1) The constituent particles of air are not chemically combined, in a fixed ratio.
2)The components of air can be separated by a physical method.