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Question

A chemical process in which a substance reacts with oxygen to give off heat is called:

A
ignition
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B
combustion
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C
Both A and B
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D
None of the above
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Solution

The correct option is D combustion
A chemical process in which a substance reacts with oxygen to give off heat is called combustion. The substance that undergoes combustion is known as a combustible substance.
The lowest temperature at which a substance catches fire is called its ignition temperature.
So the correct option is B.

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