engineering recuitment Rajasthan Housing Board JE Civil (Degree & Diploma) Mock Test 2023 Environmental Engineering Water Treatment Coagulation and Flocculation
Alum as a coagulant is found to be effective between pH range of ________
1
8.0 to 10.0
2
8.5 to 10.5
3
6.5 to 8.5
4
7.0 to 9.0