Question

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Give reason for the following observations
The smell of hot sizzling food reaches you several metres away, but to get the
smell of cold food you have to go close.
Naphthalene balls disappear with time without leaving any solid​

Answer 1

heya ✨ here's your answer.....

• the smell of hot sizzling food reaches you several meter away,but to get smell of cold food you have to go close because the kinetic energy of the particles of matter increases with the increase in temperature.

• naphthalene balls disappear with time without leaving any solid due to sublimation.

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Answer 2

When food is hot, diffusion is more. But in cold food diffusion is slow. Hence to get the smell from cold food we have to go close.