Q.

Which of the following statement is correct?

A. Ignition loss of filter should not exceed 3%
B. Wearing loss of filter sand should not exceed 5%
C. The range of CU for the slow sand filter is 3-5
D. The range of CU for the rapid sand filter is 3-5
Answer» C. The range of CU for the slow sand filter is 3-5
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