1.

The CORRECT statement (s) is/are:

Answer»

In metallurgy of iron, flux is a substance used to convert infusible impurities to fusible MASS.
Cryolite is `Na_(3)AIF_(6)` and is used in the electrolysis of alumina for lowering the melting point of alumina.
Combination of FeO with `SiO_(2)` must be avoided in metallurgy of copper.
Lead can be extracted by SELF REDUCTION of gelena.

Answer :A::B::D


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