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Question

The metal that can be purified economically by fractional distillation method is :

A
Zn
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B
Ni
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C
Cu
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D
Fe
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Solution

The correct option is A Zn
Fractional distillation process utilizes the boiling point difference between metal and that of impurity. Using this process, crude zinc containing Cd,Fe and Pb as impurities can be refined.
Option (d) is correct

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