Question

A..Write any one difference between the following.
a. Combustible and non-combustible substances.
b. Rapid and spontaneous combustion ​

Answer 1

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. Will not burn on being exposed to flame.

2--

rapid combustion is the combustion in which substances burn rapidly to produce heat and light.in rapid combustion ,external heat must be supplied so that the substance can burn. spontaneous combustion in which substance suddenly burst into flames without the application of any apparent

Answer 2

Answer:

Combustible substances support combustion and burn easily in the presence of air or oxygen to produce heat and light, while non- combustible substances do not support combustion and do not burn in presence of oxygen.

Explanation:

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