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Q.

Is it true that the non-luminous zone of a flame is the hottest?

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a

True

b

False

answer is A.

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Detailed Solution

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The non-luminous zone of a flame is the hottest.

The non-luminous zone of the flame is the hottest because of complete combustion in this zone. This zone is the outermost zone of the flame and the flame is blue in colour.

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