1.

The incorrect statement among the following isA. Hydrogen is used to reduce NiOB. Zirconium is refined by van-Arkel methodC. The sulphide ore galena is concentrated by froth floatationD. In the metallurgy of iron , the flux used in `SiO_(2)`

Answer» Correct Answer - D
CaO acts as a flux as it combines with silica present as an impurity (gangue) to form a fusible slag , `CaSiO_(3)` .


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