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Q.

Which of the following are correct with respect to the composition of air

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a

The percent of N2 in air is 21%

b

The percent of CO2 in air is 0.1%

c

The percent of O2 in air is 78%

d

The percent of Argon in air is 0.94%

answer is D.

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Detailed Solution

The composition of air is as follows:

Nitrogen – 78%, Oxygen – 21% and remaining other gases and moisture is 1%.

The percentage of Argon in air is 0.94%.

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