NEETChemistryp Block Elements (Group 13 & 14)

Why is carbon monoxide (CO) considered highly poisonous?

Options

ABecause it forms a stable complex with haemoglobin
BBecause it is highly flammable
CBecause it is a strong acid
DBecause it is a greenhouse gas

Correct answer

A. Because it forms a stable complex with haemoglobin

Step-by-step solution

Carbon monoxide is highly poisonous because it forms a complex with haemoglobin, which is about 300 times more stable than the oxygen-haemoglobin complex, preventing the transport of oxygen in the body and leading to death.

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