Question

It saves fuel if we cook food in a vessel which is blackened at the bottom and polished from the sides. Give reason ​

Answer 1

Answer:

While cooking, if the bottom of the vessel is getting blackened on the outside, it means that fuel is not burning completely. On complete burning of a hydrocarbon fuel in oxygen, will primarily yield carbon dioxide and water.

Answer 2

Answer:

While cooking, if the bottom of the vessel is getting blackened on the outside, it means that fuel is not burning completely. Partially oxidized fuel produce harmful acetaldehyde, and carbon can produce toxic carbon monoxide.