Q2)On bringing a thin copper wire near a candle flame, one can notice the changing colour of the end from red to black. The section just a little away from the end yet closer to the flame changes from red to white.
(i) What zone of the flame would correspond to these two changes? (1)
(ii) Draw the diagram of a flame and label - Dark Zone, zone of partial combustion. Why is the Dark zone called so?
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1) A hot glowing body of ignited gas that is generated by something on fire is called Flame. Kerosene oil and molten wax are substances that give a flame while burning.Wood and charcoal are substances that do not vaporise, but still burn, without any flame.
Observe an LPG flame. Can you tell the colour of the flame.
2) the picture above
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