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The filter over which sewage is sprinkled is called as

This question belongs to General Knowledge Chemistry
Chemistry
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The filter over which sewage is sprinkled is called as

Answer & Solution
Correct Answer: Option A
A trickling filter, also known as percolating filter, is an artificial bed of stone or broken brick material over which waste water or sewage is allowed to sprinkle or to trickle. It is then collected through the under drainage system.
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