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| Q. |
What is the permitted concentration of arsenic in drinking water? |
| A. | 10 g/l |
| B. | 20 g/l |
| C. | 30 g/l |
| D. | 40 g/l |
| Answer» A. 10 g/l | |
| Explanation: the permitted concentration of arsenic in drinking water is 10g/l. the permitted concentration of iron in drinking water is 200g/l. the permitted concentration of manganese in drinking water is 50g/l. | |
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