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NaCN is sometimes added in the froth flo...

`NaCN` is sometimes added in the froth flotation process as a depressant when `ZnS` and `PbS` minerals are expected because `:`

A

Pb `(CN)_(2)` is precipitated while there is no effect on ZnS.

B

ZnS forms soluble complex `Na_(2)[Zn(CN)_(4)]` while PbS forms froth.

C

PbS forms solumbe complex `Na_(2)[Pb(CN)_(4)]` while ZnS froms froth.

D

Sillccious impurities settle down on the bottom.

Text Solution

Verified by Experts

The correct Answer is:
B
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