Question

Which of the following is correct about carbon monoxide?

• A. It enhances oxygen carrying ability of blood
• B. The carboxyhaemoglobin (haemoglobin bound to $CO$) is less stable than oxyhaemoglobin
• C. It is produced due to complete combustion of carbon
• D. It is a neutral oxide

Answer 1

The correct option is D It is a neutral oxide

• $CO$ is a neutral oxide, it reduces oxygen carrying ability of blood.
• It is produced due to incomplete combustion of carbon.
• The carboxyhaemoglobin complex is 300 times more stable than oxyhaemoglobin complex.