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The CORRECT statement (s) is/are:...

The CORRECT statement (s) is/are:

A

Al - metal is extracted by electrolytic reduction of fused mixture of `Al_(2)O_(3)+Na_(3)AlF_(6)+CaF_(2)`

B

`Fe_(2)O_(3)` is reduced into Fe mainly by CO - reducing agent in blast furnace

C

Zn - metal displaces , `Ag^(+)` ion from the aqueous solution of `Na[Ag(CN)_(2)]`

D

Depressant NaCN is used to separate PbS from the mixture of ZnS and PbS.

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The correct Answer is:
A, B, C, D
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