Environmental Issue And Environmental Pollution Question 20
Question: Which one of the following is an environment related disorder with the correct main cause?
Options:
A) Black lung disease (pneumoconiosis) found mainly in workers in stone quarries and crushers.
B) Blue baby disease (methaemoglobinaemia) due to heavy use of nitrogenous fertilizers in the area.
C) Non-hodgkin’s lymphoma found mainly in workers involved in manufacture of neem based pesticides.
D) Skin cancer mainly in people exposed to benzene and methane.
Show Answer
Answer:
Correct Answer: B
Solution:
[b] Blue baby syndrome is a pathological condition, called methemoglobinemia, in which blood’s capacity for oxygen transport is reduced, resulting in bluish skin discoloration in infants.
Blue baby syndrome begins when large amounts of nitrates in water are ingested by an infant and converted to nitrite by the digestive system.
The nitrite then reacts with oxyhaemoglobin (the oxygen-carrying blood protein) to form metheglobin, which cannot and oxygen.
BETA
