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1. |
Consider the following statement regarding the depth of sand of the rapid gravity filter?i. It should be checked against breakage of flocii. The sand depth should lie between 100-200cmiii. The floc should be attached through the sand bedWhich of the above statement is/are correct? |
A. | Only i |
B. | i, ii |
C. | ii, iii |
D. | Only ii |
Answer» B. i, ii | |