# Which of the following conditions in drinking water causes methemoglobinemia?

Question:

Which of the following conditions in drinking water causes methemoglobinemia?

1.  > $50 \mathrm{ppm}$ of lead

2.  $>50 \mathrm{ppm}$ of chloride

3. $>50 \mathrm{ppm}$ of nitrate

4. $>100 \mathrm{ppm}$ of sulphate

Correct Option: , 3

Solution:

Methemoglobinemia is caused by drinking water which is contaminated with nitrate.