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What is the role of depressant (NaCN) in...

What is the role of depressant (NaCN) in Froth-Flotation method?

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In the case of an ore containing ZnS and PbS, the depressant used is NaCN. lt selectively prevents ZnS from coming to the froth but allows PbS to come with the froth.
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SUNSTAR PUBLICATION-ANNUAL EXAM QUESTION PAPER MARCH-2019-PART-D
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  3. What is Frenkel defect ? How does it affect density of the solid ?

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  7. Answer any three of the following questions. b. Calculate the value ...

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  8. Derive an intergrated rate for the first order reaction.

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  9. The specific reaction rate of a reaction quadruples when temperature c...

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  11. Answer any three of the following questions. b. What is Peptisation ...

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  12. Give an expression for Freundlich adsorption isotherm.

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  13. Answer any FOUR of the following questions. a. Write the equations f...

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