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Which of the following conditions in drinking water causes methemoglobinemia? (1) > 50ppm of lead (2) > 100 ppm of sulphate (3) > 50 ppm of chloride (4) > 50 ppm of nitrate |
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Answer» The correct option (4) > 50 ppm of nitrate Explanation: Drinking water containing > 50 ppm of nitrate causes methemoglobinemia. |
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