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prakash rana

· started a discussion

· 1 Months ago

wrong (Question: 139563.0 )

mentioned answer is suitable for rapid sand filter

Question:

Cleaning of slow sand filters is done by:

Options:
A) scraping and removal of sand
B) back washing
C) any of above
D) none of the above
Solution:
Ans: (a) scraping and removal of sand

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