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Question

Blue baby syndrome results from:


A

Excess of dissolved oxygen

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B

Excess of TDS (Total Dissolved Solids)

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C

Excess of chloride

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D

Methaemoglobin

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Solution

The correct option is D

Methaemoglobin


The correct option is D.

Explanation of correct option-

  1. The blue baby syndrome is a type of syndrome which is seen in infants or newly born babies.
  2. This syndrome is caused due to methaemoglobin.
  3. It is characterized by a reduced ability of the blood to carry oxygen as the level of normal haemoglobin reduces.
  4. This syndrome begins when large amounts of nitrate in water are consumed by an infant and then it is converted to nitrite by the digestive system.
  5. If a large amount of methaemoglobin is formed in the blood, body tissues may be deprived of oxygen, causing the infant to develop a blue colouration of their mucous membranes and possibly digestive and respiratory problems.

Explanation of incorrect option-

Option A-

  1. As there is excess dissolved oxygen in the cell, it causes hypoxia.
  2. It occurs when the tissues, organs and cells are exposed to higher levels of oxygen than the partial pressure.

Option B-

  1. The taste of water changes due to the excess of total dissolved solids.
  2. Excessive TDS makes the water bitter, or salty.

Option C-

Excess chlorine can cause pulmonary oedema.

Final answer: Blue baby syndrome results from methaemoglobin


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