Question

$C{O}_2$ extinguishers help extinguish fires by

• A. Cutting the supply of oxygen.
• B. Reducing the heat of surroundings.
• C. Limiting the supply of fuel.
• D. Cutting supply of nitrogen.

Answer 1

The correct option is A

Cutting the supply of oxygen.

Carbon dioxide is a non-conductive and non-corrosive gas used to reduce the amount of oxygen available to the fire. Itis heavier than air, hence when $C{O}_2$ extinguishers are used $C{O}_2$ replaces the air from the surface of fire and thus cuts the supply of oxygen. In this way, it helps in extinguishing the fire.