What percentage of air contains nitrogen and oxygen gases only?

20%

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99%

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100%

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Solution

The correct option is B
99%

99 percent of air contains nitrogen and oxygen gases and remaining 1 percent contains water vapors along with carbon dioxide, helium, argon and few other gases.

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Similar questions

4 : 1

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?

0^{\circ} C

(= 1.01 \times 10^{5} N / m^{2})

1.284 k g / m^{3}, 1.429 k g / m^{3}

1.251 k g / m^{3}

m m

m m

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