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Question

Combustion can not take place without:

A
water
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B
carbon
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C
air
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D
zinc
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Solution

The correct option is D air
Combustion is the chemical reaction in which substances react with air to form carbon dioxide, water, heat, and light.
So, Oxygen is a supporter of combustion. Combustion can not take place without air. Air contains about 21% volume of oxygen.


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