Q.

An ore contains lead sulphide and zinc sulphide. If froth floatation process is used, these can be separated
 

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a

by adjusting proportion of oil to water
 

b

by using collection and froth stabilisers
 

c

by using some suitable solvent in which either lead sulphide or zinc sulphide is soluble

d

by using excess of pine oil
 

answer is C.

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An ore contains lead sulphide and zinc sulphide. If froth floatation process is used, these can be separated by adjusting proportion of oil to water

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