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Which of the following statements are co...

Which of the following statements are correct ?

A

A depressant prevents certain type of particle to come to the froth.

B

Copper matte contains `Cu_2S` and ZnS.

C

The solidified copper obtained from reverberatory furnace has blistered appearance due to evolution of `SO_2` during the extraction.

D

Zinc can be extracted by self-reduction.

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MODERN PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-EXERCISE
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  10. In the following questions a statement of assertion followed by a stat...

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  12. Assertion : Sulphide ores are concentrated by Froth Flotation method. ...

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  14. Assertion : Hydrometallurgy involves dissolving the ore in a suitable ...

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  16. Which is better reducing agent at temperature 983 K, C or Co?

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