Q. The hardness limit for portable water ranges between (Solved)
1. 10 - 50 ppm
2. 50 - 65 ppm
3. 75 - 117 ppm
4. 150 - 250 ppm
5. 300 - 700 ppm
- c. 75 - 117 ppm
1. 10 - 50 ppm
2. 50 - 65 ppm
3. 75 - 117 ppm
4. 150 - 250 ppm
5. 300 - 700 ppm