Question

when you burn a clean fuel it will give ash or not? why? explain briefly

Answer 1

if you burn a clean fuel then it will give flame ,if it is fully combust and if it is not fully combust then it will give some product.

the flame are of two type first is yellow and second is blue
1) Blue flame-if the oxygen supply is sufficient then it will give blue flame
2) Yellow flame-if there is a lack of oxygen then it will give yellow flame