Question

what are Combustible and Non-Combustible Substances ​

Answer 1

A substance which burns in air and tends to produce heat and light is known as Combustible substances. Non-combustible substances are certain substances which are not combustible in the presence of air. Necessary ingredients – Heat, fuel and air. Will not burn on being exposed to flame.

Answer 2

Answer:

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Here's your answer

A substance which burns in air and tends to produce heat and light is known as Combustible substances.

Non-combustible substances are certain substances which are not combustible in the presence of air. Necessary ingredients – Heat, fuel and air. Will not burn on being exposed to flame.