Question

How does pouring of water extinguish fire?

• A. Water drops the temperature below ignition point.
• B. Water cuts the supply of carbon dioxide.
• C. Water cuts the contact of fuel with air.
• D. Water decreases the ignition temperature.

Answer 1

The correct option is A Water drops the temperature below ignition point.

$\bullet$ Water is the most common fire extinguisher. It is used when combustible solids catch fire.
$\bullet$ Water prevent the spreading of fire by lowering down the temperature of a substance. On pouring a large quantity of water on a fire, water will absorb a lot of heat and transform into steam. These steam cut off the oxygen supply.
$\bullet$ Thus, water extinguishes fire by lowering the temperature below ignition and removing the oxygen supply.