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In the Froth Floatation process, zinc su...

In the Froth Floatation process, zinc sulphide and lead sulphide can be separated by__________

A

using collectors

B

adjusting the proportion of oil to water

C

using depressant

D

using froth stabilisers

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The correct Answer is:
B, C
(b,c) Froth floatation method is used to extract metal from sulhide ore. ZnS and PbS can be seperated by using depressant and adjusting the proportion of oil to water. Depressant used for this purpose is NaCN. It selectively prevents ZnS from coming to the froth. Hence (b) and ( c) are correct choices.
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