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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 

1 Answer

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Best answer

The correct option (4) > 50 ppm of nitrate

Explanation:

Drinking water containing > 50 ppm of nitrate causes methemoglobinemia.

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