NEET Exam Model Paper 4

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Question : 41 of 180
 
Marks: +1, -0
Read the following statements regarding sewage treatment.
A) Primary treatment of sewage is physical treatment
B) Primary sludge is taken for secondary treatment
C) Floes are formed during primary treatment
D) Biogas is produced in anaerobic sludge digesters
Find the correct option (T-true ; F -False)
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