Q.

In case along with silica, there is high content in sulphide and chloride what should be used?

A. wba
B. wba and sba
C. sba
D. sba,wba and wac
Answer» B. wba and sba
Explanation: in case the sulphide and chloride are present then wba should be used. sba removes only silica and alkalinity. it doesn’t remove ema.
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