Which of the following are correctly matched regarding the color shown by different zones of a candle flame ?

Innermost zone - Black
Middle zone - Yellow
Outermost zone -Blue

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Innermost zone - Yellow
Middle zone - Black
Outermost zone -Blue

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Innermost zone - Yellow
Middle zone -Blue
Outermost zone -Black

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Innermost zone - Black
Middle zone -Blue
Outermost zone -Yellow

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Solution

The correct option is A Innermost zone - Black
Middle zone - Yellow
Outermost zone -Blue
The outermost zone also known as non-luminous zone is the zone of complete combustion. It is blue in colour.

The yellow color region which is the bright part of the flame is the middle zone. It is moderately hot and partial combustion of fuel takes place.

The least hot region of the flame is the innermost region. This inner zone is black in color due to the presence of unburnt wax vapors.

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Similar questions

In a candle flame, what is the colour of : (a) innermost zone (b) middle zone, and (c) outer zone ?

Column A	Column B	Column C
(a) Hottest part	(i) Innermost zone of unburnt wax vapors	(x) blue
(b) Moderately hot	(ii) Middle zone of partial combustion	(y) black
(c) Least hot	(iii) Outer zone of complete combustion	(z) yellow

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