Question

give reason- the middle part of the candle flame has the darkest color.​

Answer 1

The middle part of a candle flame has the darkest color because it contains the unburned particles of wax and carbon, due to which it appears black or dark in color.

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Answer 2

If you look closely at a candle flame, you'll see a blue area at the base of the flame. Above that is a small dark orange-brown section, and above that is the large yellow region that we associate with candle flames.

Outermost Zone : It is blue coloured because complete combustion takes place in this part due to sufficient amount of oxygen. ... Middle Zone : The colour of the middle zone is yellow because incomplete combustion takes place in this part with the lack of oxygen. It is less hot part than outer part of the flame.