Question

The constituent of air which helps in combustion is

• A. nitrogen
• B. carbon dioxide.
• C. oxygen
• D. helium

Answer 1

The correct option is C

oxygen

The explanation for the correct option- (C) Oxygen

Combustion - The process of reaction of oxygen with a substance(fuel) which results in the release of heat and light is called combustion.

Oxygen is essential for the process of combustion.

The explanation for the incorrect options-

(A) Nitrogen - It is a non-reactive gas that helps to natural combustion in check.

(B) Carbon dioxide - It stops the process of combustion.

(D) Helium - It is a noble gas that does not react.

Hence, option (C) is correct. The constituent of air that helps in combustion is oxygen.