Q
In a grit chamber of a sewage treatment plant ____________________?
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A
A. Flow velocity 0.15 m to 0.3 m/sec is kept
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B
B. Depth of 0.9 m to 1.20 m is kept
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C
C. One minute of detention period is kept
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D
D. All the above
Correct Answer:
D. D. All the above
