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Question

Levigation is done on the basis of difference in the ____ of the ore and the gangue particles.

A
solubility
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B
specific gravity
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C
magnetic properties
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D
texture
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Solution

The correct option is B specific gravity
During levigation, finely pulverized (powdered) ore is treated with a stream of water such that the lighter gangue particles are washed away leaving behind the heavier ore particles. This is particularly applicable for heavier ore like cassiterite and haematite.

The setup for the process is based on the difference in the specific gravity (relative density) of ore and gangue particles.

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