Given below is the flow chart of sewage treatement. Identify A,B,C and D and select the correct
Channel: Doubtnut
Date: 2020-08-23

Given below is the flow chart of sewage treatement. Identify A,B,C and D and select the correct option. img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/NCERT_FING_BIO_OBJ_XII_MHW_C10_E01_044_Q01.png" width="80%"