Match the column Directions- -Match Column - I with Column - II and select the correct answer using the codes given below the columns - Column - I amp-Column - II- A- Hottest zone of candle flame amp- P- No combustion zone- B- Dark zone of candle flame amp- Q- Zone of unburnt wax vapours- C- Yellow- zone of candle flame amp- R- Non-luminious zone- D- Black innermost zone of candle flame amp- S- Incomplete combustion zone - -A - -P- B - Q- C - R- D- S-A - R- B - P- C - S- -D- Q-A - S- B - R- C - Q- D- P-A - Q- B - P- C - R- D - S-

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Zones of Candle Flame

Match the col...

Question

Match the column
Directions: Match Column – I with Column – II and select the correct answer using the codes given below the columns

$\begin{matrix} C o l u m n - I & C o l u m n - I I A. Hottest zone of candle flame & P. No combustion zone B. Dark zone of candle flame & Q. Zone of unburnt wax vapours C. Yellow zone of candle flame & R. Non-luminious zone D. Black innermost zone of candle flame & S. Incomplete combustion zone \end{matrix}$

$A \to P, B \to Q, C \to R, D \to S$

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$A \to R, B \to P, C \to S, D \to Q$

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$A \to S, B \to R, C \to Q, D \to P$

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$A \to Q, B \to P, C \to R, D \to S$

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Solution

The correct option is B
$A \to R, B \to P, C \to S, D \to Q$

The outermost zone is the hottest among all zones and is blue in colour, and this is due to complete combustion. It is the non-luminous part of the flame.
The middle zone of the candle flame is moderately hot and is yellow in color, and partial combustion of fuel takes place. It is the bright part of the fire.
The innermost zone of the flame is the least hot and is black in color. This is due to the presence of unburnt wax vapours.

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