Q.

The hottest part of a candle flame is the:

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a

Blue zone

 

b

Middle part

c

Innermost part

d

Outermost part

answer is B.

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Detailed Solution

The hottest part of a candle flame is the outermost part.

It is known as the non-luminous zone or the zone of complete combustion of the candle flame. It has an adequate supply of oxygen because of which complete combustion occurs. Therefore, no residue is left on an object placed in this zone.

  
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