Methemoglobinemia is caused by the presence of $\mathrm{X}$ in drinking water. $\mathrm{X}$ is

Methemoglobinemia is caused by the presence of $\mathrm{X}$ in drinking water. $\mathrm{X}$ is
  1. 1000 ppm of sulphate
  2. $20 \mathrm{ppm}$ of fluoride
  3. 200 ppm of nitrate
  4. $50 \mathrm{ppb}$ of lead

Solution

No solution. Refer to answer key.

Asked in: AP EAMCET 2018 (24 Apr Shift 2)

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