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Variation of hardness of raw water in zeolite process _________

(a) Do not affects the exchange process

(b) Affects the exchange process

(c) Slightly affects the exchange process

(d) Some times affects the exchange process

I got this question during a job interview.

The query is from Permutit’s Process topic in chapter Water of Applied Chemistry

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Correct option is (a) Do not affects the exchange process

Best explanation: Variation of hardness of raw water in zeolite process do not affect the exchange process because according to it zeolite bed changes automatically.

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