Which of the following conditions in drinking water causes methemoglobinemia?
(A) > 50 ppm of lead (B) > 50 ppm of chloride
(C) > 50 ppm of nitrate (D) > 100 ppm of sulphate
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Answer:
C. is the correct answer
Explanation:
Blue baby disease or methaemoglobinaemia or cynosis is caused by the high amount of nitrates in water.
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