Question

Give reason for the following observations.
The smell of hot sizzling food reaches you several meters away , but gto get the smell from cold food you have to go close.

Answer 1

It is because rate of diffusion is high with higher temperature,

So the vapours of hot food move with high speed but the rate of diffusion is slow with low temperature so the speed of vapours of cold food is slow..

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Answer 2

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Particles in the air, if fueled with higher temperatures, acquire high kinetic energy which aids them

to move fast over a stretch. Hence the smell of hot sizzling food reaches a person even at a distance of several meters.

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