13. The hottest zone of candle
is the .....
non luminous zone
dark zone
luminous zone
none of these
Answers
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4
Answer:
none of these
Explanation:
Due to complete combustion, the outer zone is blue. This zone is the hottest in temperature when compared to the other zones. This blue coloured zone is the non-luminous part of the flame. The yellow colour region which is the bright part of the flame is the middle zone.
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