Question

Which of the following is not correct about carbon monoxide?

• A. It forms carboxyhaemoglobin
• B. It reduces oxygen carrying ability of blood.
• C. It is produced due to incomplete combustion.
• D. The carboxyhaemoglobin (haemoglobin bound to CO) is less stable than oxyhaemoglobin.

Answer 1

The correct option is D The carboxyhaemoglobin (haemoglobin bound to CO) is less stable than oxyhaemoglobin.

When CO combines with haemoglobin, it forms carboxyhaemoglobin which is more stable than oxyhaemoglobin thats why it reduces oxygen carring ability of blood.