Question

a) What are Combustible substances and Non- Combustible substances? Explain with examples.
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Answer 1

Answer:

When a substance can burn in air and produce heat and light is known as a combustible substance. Certain substances cannot be burnt in the presence of air. ... Some examples of combustible substances are diesel, petrol and kerosene. Examples of non-combustible substances are glass, stone, Portland cement concrete etc.

Answer 2

Answer:

Combustible substance ::

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

Necessary ingredients – Heat, fuel and air

Examples – Diesel, petrol, kerosene.

Non- Combustible substances ::

Non-combustible substances are certain substances which are not combustible in the presence of air.

Will not burn on being exposed to flame.

Examples – Glass, stones.

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