Which of the following statements about carbon monoxide is true?

Explanation

The correct answer is It is the result of the incomplete combustion of fossil fuels. Key Points Carbon monoxide (CO) is produced due to incomplete combustion of fossil fuels, metallurgical operations, automobile emission, cigarette smoking. It is combustible , may serve as a fuel source and can form explosive mixtures with air. It easily combines with haemoglobin, produces carboxyhaemoglobin which impairs oxygen transport resulting in headache, decreased vision, cardiovascular disease, asphyxia. It is only slightly soluble in water, blood serum and plasma. It is colourless and odourless gas. It is not a persistent pollutant as such it combines with oxygen to form CO 2, which is further removed from the atmosphere naturally by the process of photosynthesis.