I am not getting in the vedio given if a glss plate is rested over innnermost zone and luminious zone a blackish ring is formed on the glass plate but in the non-luminious zone no such ring is formed thus stating athat partial combustion takes place inside luminious and innermost zone and a complete combustion occurs in non-luminious zone. plese explain me why if a blackish ring is formed on glass dish incomplete combustion takes place and if it is not formed a complete bcombustion takes place???? plese answer fast???????????
It is due to the presence of unburnt carbon particles in the luminous zone because of the incomplete combustion in the luminous zone . Complete combustion takes place in the non - luminous zone .