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Question

Why are napthalene balls kept in clothes to be put away

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Solution

Naphthalene is an organic compound which undergoes sublimation.

-->Naphthalene balls are kept in stored woollen and silk clothes etc to protect from the attack of moths and other insects.
---> It is noticed that if kept open,Naphthalene balls disappears with time without leaving behind any residue.
--->The naphthalene balls keep on forming naphthalene vapours slowly which disappears into air.

Hence for the above reasons, naphthalene balls are stored in tight packing

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