500 Best Irrigation Engineering MCQ Q145). The permanent hardness of water can be removed by a).Adding alum b).Adding chlorinec).Boilingd).Zeolite process View Answer Correct Answer: Zeolite process Explanation: Related Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Pages ( 19 of 19 ): « Previous1 ... 1718 19
