Home Biology Ecosystem Previous Year Questions The 'blue baby' syndrome results from
Biology Ecosystem Previous Year Questions Single Correct MCQ
Published on: August 13, 2026

The 'blue baby' syndrome results from

A
excess of dissolved oxygen
B
excess of TDS (total dissolved solids)
C
excess of chloride
D
methaemoglobinaemia

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The correct answer is:
D

Blue baby syndrome occurs when nitrate-contaminated water reduces the oxygen-carrying capacity of blood, causing methaemoglobinaemia.

This leads to a bluish skin color in infants.

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