engineering recuitment KPSC Assistant Engineer Civil Mock Test 2020 Environmental Engineering Water Treatment
For a water, the dosage at break point is 1.5 mg/L and residual chlorine at that time is found to be 0.3 mg/L. If cumulative chlorine added is 2 mg/L, the total residual chlorine will be –
1
1.2 mg/L
2
0.8 mg/L
3
0.5 mg/L
4
Zero