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Sometimes, it is possible to separate tw...

Sometimes, it is possible to separate two sulphide ores by adjusting proportion of oil to water or by using depressants. In case of an ore containing ZnS and PbS, the depresent used is

A

NaCN prevents PbS from coming to the froth but allows ZnS to come with froth .

B

NaCN prevents ZnS from coming to the froth but allows PbS to come with froth.

C

NaCN prevents frothing of both ZnS and PbS, hence no froth is formed.

D

NaCN does not act as depressant hence a mixture of PbS and ZnS is found in froth.

Text Solution

Verified by Experts

The correct Answer is:
B
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Sometimes it is possible to separate two sulphide ores by adjusting the proportion of oil to water or by using depressant NaCN is added to an ore conaining ZnS and PbS, what is the correct observation?

Given below are two statements : Statement I : Sphalerite is a sulphide ore of zinc and copper glance is a sulphide ore of copper. Statement II : It is possible to separate two sulphide ores by adjusting proportion of oil to water or by using 'depressants' in a froth flotation method. Choose the most appropriate answer from the options given below :

How do we separate two sulphide ores by froth floatation method?

Statement 1: Sphalerite copper glance are the sulphide ores of zinc and copper Statement 2: It is possible to separate two sulphide ores by adjusting proportion of oil to water or by using depressant

Copper is extracted from sulphide ore using the method :

In froth floatation process for PbS (Galenea) contains ZnS and Fes impurity the depressant we use is: