Question

LPG stove burns with a blue flame. Sometimes the flame becomes yellow and the base of utensils turn black . Give reason for this observation.

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Answer 1

Answer: the reason why sometimes flame becomes yellow is because the Sodium gives a yelllow light in a flame so there must be some sodium in milk , if you stop the milk from boiling over and clean the stove the sodium light will go away

Explanation : MARK ME AS BRAINLIEST PLSS.........!!

Answer 2

$\sf\green{ QUESTION :- }$

LPG stove burns with a blue flame. Sometimes the flame becomes yellow and the base of utensils turn black . Give reason for this observation.

$\sf\green{ ANSWER :- }$

LPG stove burns with a blue flame. Sometimes the flame becomes yellow and the base of utensils turn black because

↝ The yellow flame comes when the gas in the cylinder is about to get finished .

↝ So more air comes in contact with gas which causes complete combustion and the base of the utensils turn black .

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$\sf\red{ EXTRA\: INFORMATION :- }$

$\sf\green{ FLAME :- }$

A zone in which chemical combination takes place between a substance in gaseous form and oxygen in the air to give heat and light is called flame .

★ A burning solid does not produce flame unless its vapour is formed. Only those solid or liquid fuels which produce vapour on heating burn with a flame

For ex. Kerosene, paraffin wax,camphor

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$\sf\green{ TYPES :- }$

$\sf\blue{ 1. \: Non \: luminous \: flame :- }$ A flame produced with a evolution of heat but very little light. For ex: LPG stove flame.

$\sf\blue{ 2. \: Luminous \: flame :- }$ A flame produced with evolution of both heat and light.