Give reasons for the following observation: The smell of hot sizzling food reaches you several metres away, but to get smell from cold food, you have to go close.



Q.:- Give reasons for the following observation:
The smell of hot sizzling food reaches you several metres  away, but to get smell from cold food, you have to go close.

 

Answer:-

This happens because rate of diffusion of gas increases with increase in temperature. In case of hot food diffusion of smell is faster whereas in case of cold food, diffusion is slower.



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