Question

give reason for the following observation : a) Napthalene balls disappear with time without leaving any solid . b) We can get smell of perfume sitting several meters away .



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Answer 1

Answer:

science

Explanation:

Naphthalene balls disappear with time without leaving any solid because they undergo sublimation i.e., they directly change into vapour without passing through the liquid state. (b): We can get the smell of perfume sitting several metres away due to diffusion.

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Answer 2

1. Naphthalene balls disappear with time without leaving any solid because they undergo sublimation.

2. We can smell the perfume from sitting several meters aways because of a process known as diffusion.