Question

19. The candle flame contains unburnt carbon particles. Identify the zone and predict the
reason​

Answer 1

Answer:

The circular dark ring is formed on the slide by deposition of unburnt carbon particles present (middle) luminous zone of the candle.

The copper wire takes the least time to become red hot when introduced into the (outermost) non luminous zone of the flame as this zone has the highest temperature.

hope it helps ✔︎ thanks