..:: Filtration on Environmental Studies related Questions and Answers

Filtration on Environmental Studies related Questions and Answers

Question : What is the ratio in which coal, sand and garnet are present in the mixed media filter?
1. 2: 3: 5
2. 4: 2: 1
3. 6: 3: 1
4. 1: 2: 3
Answer : 3 - 6: 3: 1

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