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A)
i Ii iii Hottest Least hot Moderately hot
B)
i ii iii Hottest Moderately hot Least hot
C)
i ii iii Least hot Moderately hot Hottest
D)
i ii iii Least hot Hottest Moderately hot
Correct Answer: B
Solution :
A candle flame consists of three zones: the outermost zone, the middle zone, and the innermost zone. The outermost zone of a candle flame is the zone of complete combustion. Therefore, it is the hottest. The middle zone is moderately hot, and the innermost zone only has unburnt wax. Thus, the innermost zone is least hot zone. The correct answer is B.
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