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  • In the Froth Floatation process, zinc sulphide and lead sulphide can be separated by ______________. (i) using collectors. (ii) adjusting the proportion of oil to water. (iii) using depressant. (iv) using froth stabilisers.

In the Froth Floatation process, zinc sulphide and lead sulphide can be separated by ______________.

(i) using collectors.

(ii) adjusting the proportion of oil to water.

(iii) using depressant.

(iv) using froth stabilisers.

Answers (1)

The answer is the option (ii, iii) Froth floatation method is used in extraction of metal from sulphide ore. The two sulphide ores can be separated by using depressant and adjusting the proportion of oil to water in the froth floatation process. Depressant used in separation of zinc sulphide and lead sulphide is NaCN. It is utilized in selective prevention of ZnS from coming to the froth.

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