Question

State if the following statements are true or false. Correct the false statement.

Air contains 78 percent oxygen.

• A. True
• B. False

Answer 1

The correct option is B False

Composition of air: Air is a mixture of nitrogen, oxygen, carbon dioxide, water vapours, and some other gases which are present in traces. It also contains dust particles in suspended form. As per volume, dry air contains 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and small amounts of other gases.

For the above reasons, Air is composed of 78 % nitrogen and 21 % oxygen.

Hence, the above statement is false.