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Q.

The purification of naphthalene can be done by

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a

filtration

b

sublimation

c

crystallization

d

evaporation

answer is B.

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Detailed Solution

The purification of naphthalene can be done by sublimation.

Sublimation is the process of changing a material from its solid to gaseous form without it being liquid, according to physics. An illustration is the evaporation of dry ice, which is frozen carbon dioxide, at typical atmospheric pressure and temperature. Vapour pressure and temperature correlations cause the phenomena.

Hence, option B is correct. 

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The purification of naphthalene can be done by