Question

While cooking in the kitchen, some food spills over the burner of the gas stove. As

a results the flames of the burner appears yellow and the cooking vessels are

deposited with blacksubstance.
a.)Name the black substance that gets coated on thevessels.

b.)Name the fuel being used is in the gas stove.

c.)State two points which show the fuel used in a gas stove is a better fuel than

wood used in ordinary chulhas.

d.)Name one harmful gas which is formed by the incomplete combustion of

carbon fuels​

Answer 1

Explanation:

While cooking, if the bottom of the vessel is getting blackened on the outside, it means that the fuel is not burning completely. When the fuel burns completely giving a blue flame, the bottom of the vessel remains clean.

When the fuel does not burn completely then a sooty flame appears which makes the bottom of the utensil black. It is due to the air holes, which are getting blocked and the fuel does not burn completely.