Question
i. The slow sand filter is not efficient in removing turbidity
ii. The slow sand filter has a high initial cost
iii. Skilled supervision is required in slow sand filter
Which of the above statement is/are correct?
a.
Only iii
b.
i, ii
c.
i, ii, iii
d.
ii, iii
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Q. Consider the following statement. i. The slow sand filter is not efficient in removing turbidity ii. The slow sand filter has a high initial cost iii. Skilled supervision is...
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