Question

The hottest zone of a candle flame is dash​

Answer 1

Answer:

Due to complete combustion, the outer zone is blue. This zone is the hottest in temperature when compared to the other zones. This blue coloured zone is the non-luminous part of the flame. The yellow colour region which is the bright part of the flame is the middle zone.

Answer 2

The hottest zone of a candle flame is the non-luminous zone.

• The flame of a candle has three zones, the non-luminous zone (blue zone), the luminous zone (yellow), and the dark zone (black zone).
• The blue zone, the outermost zone, is the hottest part of the flame of a candle. It is so because of complete combustion happening there due to readily available oxygen.
• The yellow zone, the middle zone, is comparatively cooler due to incomplete combustion due to scarcity of oxygen.
• The black zone, the innermost zone, is the coolest of the three due to the lack of oxygen for the burning of the flame.
• Oxygen is necessary for combustion, hence its lack thereof causes the flames to get cooler in the inner parts of the candle's flame.
• Thus, the hottest zone of a candle flame is the non-luminous zone.

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