The innermost zone of candle flame is the least hot due to the presence of :

unburnt wax vapour.

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no supply of oxygen.

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presence of wick.

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all the above

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Solution

The correct option is C unburnt wax vapour.
The innermost zone is the least hot and black in color. This is due to the presence of unburned wax vapors.
Hence, option A is correct.

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Similar questions

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

Name the various zones of a candle flame. Which zone (or part) of a candle flame is the least hot (or coldest) ?

	Column I		Column II
(a)	Hottest zone of a candle flame	(i)	Zone of unburnt wax vapours
(b)	Yellow zone of a candle flame	(ii)	Non-luminous zone
(c)	Black innermost zone of the candle flame	(iii)	Incomplete combustion zone

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

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