The principle behind the separation of two substances through distillation is difference in _____ between gangue and ore particles.
A
weight
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B
boiling point
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C
size
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D
melting point
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Solution
The correct option is B boiling point Distillation is a refining process that is used to purify low boiling metals like mercury and zinc. Impurities usually contain high boiling point than metals in this process. So, the principle behind refining through distillation is the difference in the boiling point between gangue and ore particles.