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Select the correct sequence of events in...

Select the correct sequence of events in secondary treatment of sewage.

A

i,iv, ii, iii

B

ii, iv, i, iii

C

ii, i, iv, iii

D

iv, ii, iii, i

Text Solution

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The correct Answer is:
C
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DINESH PUBLICATION ENGLISH-MICROBES IN HUMAN WELFARE-RQ
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