If Organic sources of carcinogenic compounds in water persist even after chlorination,  then what is the correct sequence among treatment processes listed below if all these are considered compulsory ?
 1. Coagulation 2. Sedimentation 3. Filtration in general
 4. Activated carbon bed filtration 5. Flocculation 6. Chlorination
 a) 4-5-3-2-6 and 1
 b) 1-2-3-4-5 and 6
 c) 4- 2- 3- 1- 5 and 6
 d) 1-5-2-3-4 and 6

1 Answer

Answer :

d) 1-5-2-3-4 and 6

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