engineering recuitment UKPSC AE Civil 2021 Mock Test (Re-Exam) Irrigation Engineering Water Requirement of Crops
An identified source of irrigation water has ion concentrations of Na+, Ca++ and Mg++ as 20, 10 and 8 milli equivalents per litre, respectively. The SAR of this water is approximately:
1
2.06
2
6.67
3
2.67
4
zero