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Question

Which of the following process is used to purify Tin?

A
Distillation
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B
Liquation
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C
Electrolytic refining
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D
Zone refining
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Solution

The correct option is B Liquation
Liquation is used for purification of metals that contain impurities which are less fusible than the metals themselves i.e. the melting points of the metals are lower than that of the impurities. Tin is refined by liquation process.
In liquation limetal is made to flow on sloping surface, this is how it separates from high melting metals

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