Question

The main constituent of air is nitrogen, which supports combustion.

• A. True
• B. False

Answer 1

The correct option is B False

Composition of air:

• The main composition of air is Oxygen 21 % and Nitrogen 78%.
• Other gases are 1% carbon dioxide, water vapors, etc.

Combustible property of air:

• Air is a mixture of gases, in which its constituents retain their properties.

Oxygen gas:

• It is a neutral gas.
• Oxygen acts as an oxidizer that supports the combustion process.
• It is required for respiration and combustion.

Nitrogen gas:

• It does not support combustion.
• It is not highly reactive i.e does not support combustion with other molecules in the atmosphere and is mainly present in the air.

Thus the main constituent of air is nitrogen, which supports combustion is a false statement.