Question

Naphthalene balls kept in stored warm clothes dissappear over a period of time. Why?

Answer 1

because it reacts with water present in air(moisture).

don't worry ok

Answer 2

Naphthalene balls undergo the process of sublimation.Thenaphthalene balls keep subliming slowly.Thus,after a certain period of time the naphthalene ball kept in stored clothes in our homes disappear over a period of time without leaving any residue.