A. Aeration of water is effective in CO2 removal
B. The zeolite water softening process reduces the hardness of water by not more than 50%
C. Sodium sulphate or sodium carbonate do not cause hardness in water
D. Water with pH value less than 7, is acidic
Correct Answer: The zeolite water softening process reduces the hardness of water by not more than 50% ✔
Last Updated: February 14, 2019