Question

which one is correct among
statement
1 .Dissolved and suspended impurieties in
wastewater is called contaminants
2. Cleaning & water is process of removing before it enters a waterbody

3.Wastewater is treated in sewage
treatment plant

4. All of these
​

Answer 1

Answer:

option d) is correct

All of these

Answer 2

3 is correct

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