Percentage of oxygen in air by volume ………………
A) 20.9%
B) 78.1%
C) 0.03%
D) 0.1%
Answered Feb 05, 2023
Correct option is A) 20.9%
Correct Answer - 0.003
Correct Answer - (i) 12% (ii) 25g
Option : (A) 40%
The percentage of carbon dioxide in exhaled air is 4.4
The percentage of oxygen in inhaled air is 21%
Air is a mechanical mixture of a variety of gases. The main constituents of this mixture are nitrogen and oxygen, accounting for almost 99% of the whole, with roughly three...
Correct option is B) 78.1%
Correct option is D) 0.9%
Correct option is C) 25%
The percentage of oxygen in the atmosphere is 12%
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