Which of the following conditions in drinking water causes methemoglobinemia?
A
>50ppm of load
B
>100ppm of sulphate
C
>50ppm of chloride
D
>50ppm of nitrate
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Solution
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Correct option is D)
The concentration of nitrate >50ppm in drinking water causes methemoglobinemia which is a blood disorder in which an abnormal amount of methemoglobin is produced.