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GATE Civil Engineering (CE) 2010 Solved Paper
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Question Numbers: 58-59 Ion concentration obtained for a groundwater sample (having pH = 8.1) are given below
| Ion | Ion concentration(mg/L) | Atomic weight |
| Ca2+ | 100 | Ca = 40 |
| Mg2+ | 6 | Mg = 24 |
| Na+ | 15 | Na = 23 |
| (HCO3) - | 250 | H = 1, C = 12,O = 16 |
| SO42- | 45 | S = 32, O=16 |
| Cl - | 39 | Cl =35.5 |
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