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Q.

In metallurgy processes, the flux used for removing acidic impurities is :

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a

Silica 

b

Sodium chloride 

c

Lime stone

d

Sodium carbonate

answer is C.

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Detailed Solution

Limestone, CaCO3 is basic. The removal of acidic contaminants uses lime stone (a basic flux). Limestone is a sedimentary rock mostly made of calcium carbonate (calcite) or calcium and magnesium double carbonates (dolomite).

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