The colour of the innermost zone of a candle flame is___.

orange

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yellow

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black

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blue

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Solution

The correct option is C black
The innermost zone of candle flame is black in colour. It is where the incomplete combustion takes place. The middle zone of candle flame is yellow in colour. It is where the partial combustion takes place. The outer zone of candle flame is blue in colour. It is where the complete combustion takes place.

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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 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

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