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Combustible and Non-Combustible Substances

Which of the ...

Question

Which of the following is a non-combustible substance?

A

Coke

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B

Diamond

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C

Coal

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D

Wood

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Solution

The correct option is A Diamond
Combustible substances can easily catch up the fire and burn rapidly while non-combustible substances cannot be easily ignited.
We know that coke, coal, and wood are fossil fuels and are used for cooking purposes, therefore, these are combustible substances. So the substance which is non-combustible is diamond.

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