Question

Arrange the different regions of a flame in increasing order of temperature.​

Answer 1

Explanation:

Colors tell us the temperature of the flame. The outermost zone is the hottest among all zones and is blue in color, 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.

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Answer 2

Answer:

(1) The Outermost Zone

1. The non-luminous zone of the candle flame.
2. The hottest part of the candle flame.
3. Appears blue in colour.
4. Here, complete combustion of wax vapours takes place since enough oxygen is available.

(2) The Middle Zone

1. The luminous zone of the candle flame.
2. Moderately hot.
3. Appears yellow in colour.
4. Here, the wax vapours are not completely burnt due to limited availability of oxygen.

(3) The Innermost Zone

1. The dark zone of the candle flame.
2. It is the least hot among the three zones of the candle flame.
3. Appears black in colour.
4. Here, the wax vapours do not burn at all because wax vapours are unable to come in contact with oxygen.

Explanation:

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