Question

give reason for the following naphthalene balls get disappear with time without leaving any solids we can get the smell of perfume sitting several meters away

Answer 1

Answer:

naphthalene balls are the chemical substances which we leave at the corners of the home or on the cloths instead to be safe from the insects which bites the silk cloths....

Explanation:

as they are chemical substances they mix up into the particular area of home atmosphere helps us to be protected..

Answer 2

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(a) At room temperature, naphthalene balls undergo sublimation wherein they directly get converted from a solid to a gaseous state without having to undergo the intermediate state, i.e., the liquid state.

(b) Molecules of air move at a higher speed and have large intermolecular spaces. Perfumes comprise of flavoured substances that are volatile which scatters quickly in air, becoming less concentrated over a distance. Hence we are able to smell perfume sitting several metres away.

Hope it Helps !!