A) excess of chloride
B) methaemoglobin
C) excess of dissolved oxygen
D) excess of TDS (Total Dissolved Solids)
Correct Answer: B
Solution :
The disease blue baby syndrome or cyanosis results from methaemoglobin. The main cause of this disease are the nitrate fertilisers on soil, which enter the human body through water and converted to nitrites by microbial flora of intestine. The nitrites combine with haemoglobin to form, methaemoglobin causing methaemoglobinaemia in adults and blue baby syndrome in newly borne babies or infants.
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