Q13 of 87 Page 105

How many Zones are there in a flame?

A flame consist of three zones. These are Innermost zone, middle zone, outer zone. The three zones of a flame have different colors and different temperature.


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11

Which of the following does not produces a flame on burning?

 12

Name one fuel which burn without producing a flame.

 14

Which zone of a candle flame is the hottest?

 15

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