Question

WHAT IS COMBUSTION? DIFFERENCE BETWEEN COMBUSTIBLE AND NON-COMBUSTIBLE SUBSTANCES

Answer 1

Combustion is a chemical process in which a substance reacts rapidly with oxygen and gives off heat.

Difference-
combustible substances are those which catch fire or burn easily whereas non-combustible substances don't  burn or catch fire easily.

Answer 2

Combustion is burning of a substance in presence of oxygen with release of heat and light.

There are 4 types combustion-:
•Rapid combustion- Combustion in which substances catch fire instantly.
•Spontaneous combustion- Combustion which is done without any apparent cause.
•Slow combustion- Combustion in which substances catch fire slowly.
•Explosion- It's uncontrollable combustion.

There are two types of materials which burns are-:
•COMBUSTIBLE MATERIALS- The substances which burns easily in presence of oxygen
•NON-COMBUSTIBLE MATERIALS- The substances which doesn't catch fire very easily in presence of oxygen.


Hope it helped you..............