Blue Baby Syndrome is caused by the contamination of
nitrite (NO<sub>2</sub><sup>-</sup>)
sulphite (SO<sub>3</sub><sup>2-</sup>)
nitrate (NO<sub>3</sub><sup>-</sup>)
sulphate (SO<sub>4</sub><sup>2-</sup>)
Answer is Right!
Answer is Wrong!
This question was previously asked in
UPSC CDS-2 – 2017
Blue Baby Syndrome, or methemoglobinemia, is primarily caused by the ingestion of water contaminated with high levels of nitrate. While nitrite (NO2–) is the substance that directly causes the conversion of hemoglobin to methemoglobin in the blood, the environmental contaminant commonly responsible, especially in drinking water from agricultural areas, is nitrate. Nitrate is converted to nitrite by bacteria in the digestive system, particularly in infants, leading to the syndrome.