Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Select the correct statement about carbon monoxide:
A
In CO molecule, there are four sigma and one 
bonds between carbon and oxygen
bonds between carbon and oxygen
B
It is a violet coloured gas
C
It is highly poisonous in nature
D
It does not form complex with haemoglobin
Text Solution
Verified by ExpertsThe correct answer is:
C
Carbon monoxide gas is highly poisonous in nature because it forms a complex with
haemoglobin which is about 300 times more stable than the oxygen-haemoglobin complex. This prevents haemoglobin in the red blood corpuscles from carrying oxygen round the body and ultimately resulting in death.
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