Question

U must have seen that LPG burns with a blue flame but sometimes the colour of the flame turns yellow. Can u give reason for it ?

Answer 1

because gas form fire fire is red. and it also burn green but the mixture of the red and green color gas will form yellow color

Answer 2

Lpg burns with blue flame because complete combustion takes place .

it's may be sometimes red because of any problem caused.

as , you have asked yellow flame is formed before red , is because of any type of issue caused during the experiment.

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