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Question

The lowest temperature at which a combustible substance catches fire is called:

A
critical temperature
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B
absolute temperature
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C
ignition temperature
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D
none of these
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Solution

The correct option is D ignition temperature
Ignition temperature is the lowest temperature at which a combustible substance catches fire.
The lowest temperature at which a combustible substance when heated takes fire in the air and continues to burn also called autogenous ignition temperature.
Hence, option C is correct.

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