Q. The prescribed hardness limit of potable water ranges between (Solved)
1. 50 to 75 P.P.M.
2. 75 to 115 P.P.M.
3. 100 to 150 P.P.M.
4. 150 to 200 P.P.M.
- b. 75 to 115 P.P.M.
1. 50 to 75 P.P.M.
2. 75 to 115 P.P.M.
3. 100 to 150 P.P.M.
4. 150 to 200 P.P.M.