Chemical Process
Dechlorination of treated water is necessary to

Control taste and odour
Remove chlorinous taste
Reduce the bacterial load on filter
Remove residual turbidity

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Chemical Process
Comparing sulphate process with sulphite process, we find that __________ in the later.

Both temperature & pressure in the former is more than that
Pressure is more in the former whereas temperature is less
Temperature is more in the former whereas pressure is more
Both temperature & pressure in the former is less than that

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