Question

Give Reason: Naphthalene balls disappears with time without leaving any residue

Answer 1

Naphthalene ball is a sublimable substance. It will change directly from solid state to gaseous state without entering liquid state. Thus, it disappears within seconds without leaving any residue.

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Answer 2

Naphthalene balls are sublime which ultimately converts into vapors directly and would disappear without leaving any residue..........

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