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Question

Match column 'A' with column 'B', concerning the characteristics of a flame and its zones.
'A''B'
a. Dark inner zone1. Hottest part (No carbon)
b. Blue zone2. Partial combustion
c. Luminous zone3. Unburnt vapours of wax
d. Non-luminous zone4. Complete combustion

  1. a - 2, b - 3, c - 4, d - 1
  2. a -1, b - 2, c - 3, d - 4
  3. a - 3, b - 4, c - 2, d - 1
  4. a - 4, b - 1, c - 2, d - 3

A
a - 4, b - 1, c - 2, d - 3
B
a - 2, b - 3, c - 4, d - 1
C
a -1, b - 2, c - 3, d - 4
D
a - 3, b - 4, c - 2, d - 1
Solution
Verified by Toppr

1. Dark zone: The dark zone is the area around the wick of the candle flame that consists of unburnt wax vapour. It is the least hot of all the four zones.

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Similar Questions
Q1
Match column 'A' with column 'B', concerning the characteristics of a flame and its zones.
'A''B'
a. Dark inner zone1. Hottest part (No carbon)
b. Blue zone2. Partial combustion
c. Luminous zone3. Unburnt vapours of wax
d. Non-luminous zone4. Complete combustion

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Q2
Match Column I with Column II and select the correct option from the codes given below.
Column IColumn 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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Q3
The hottest zone of a candle flame is
(a) non-luminous zone.
(b) luminous zone.
(c) dark zone.
(d) blue zone at the base of the wick.
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Q4
Match the following for the flame of a candle.​
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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Q5
Which zone in a candle flame gives out the maximum light?
(a) dark zone
(b) non-luminous zone
(c) blue zone
(d) luminous zone
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