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Why carbon monoxide (CO) poisonous for man? |
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a) |
It affects the nerves of the lungs |
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b) |
It affects the diaphragm and intercostals muscles |
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c) |
It reacts with oxygen reducing percentage of oxygen in air |
|
d) |
Haemoglobin combines with carbon monoxide instead of oxygen and the product cannot dissociate |
|
Why carbon monoxide (CO) poisonous for man? |
|
|
a) |
It affects the nerves of the lungs |
|
b) |
It affects the diaphragm and intercostals muscles |
|
c) |
It reacts with oxygen reducing percentage of oxygen in air |
|
d) |
Haemoglobin combines with carbon monoxide instead of oxygen and the product cannot dissociate |
(d)
If a person respires in air containing normal amount of oxygen (21%) and small amount of carbon monoxide, he suffers from suffocation because haemoglobin combines with carbon monoxide to form a stable compound. The affinity of haemoglobin to carbon monoxide is about 250 times more than for oxygen. 0.1% of carbon monoxide blocks 50% Hb of the body due to which the oxygen carrying capacity of blood is decreased. This is called hypoxia.