Question

The smell of food being cooked reaches us from a distance whereas we are not able to smell food which was kept in a refrigerator for sometime. Why?

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Answer 1

Answer:

The smell of food cooked in the kitchen reaches us even from a considerable distance because the tiny particles of the vapour of food mix with the air and move continuously in all directions. This process is called diffusion.

Answer 2

Because the food which is being cooked is hot and hot substances have more kinetic energy so the air around it will travel faster and reach our nose but cold food have less kinetic energy so the air around it will travel slow and reach our nose slowly.