engineering recuitment FCI JE 2022 Mock Test for CE/ME/EE (Phase I & II) Environmental Engineering Water Treatment Softening
If the total hardness of a water sample from complete analysis is found to be 120 mg/l and the non-carbonate hardness is 50 mg/I. The carbonate hardness (in mg/l) shall then be
1
170
2
70
3
20
4
2.4
5
0.42