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प्रश्न
Naphthalene can be separated from sand :
विकल्प
by sublimation
by distillation
by crystallisation
by using water as solvent
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उत्तर
by sublimation
Naphthalene sublimes on heating, whereas sand does not. So, when the mixture is heated, solid naphthalene turns into vapours, which can be condensed. Sand remains in the container.
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