Raaz Malhotra 144 Questions 162 Answers 107 Best Answers 2k Points View Profile 7 Raaz Malhotra Asked: June 13, 2021In: Class 9 Science Explain carbon monoxide poisoning. 7 NCERT Important Questions Class 9 Science biology Chapter 14 Important NCERT Extra Questions Chapter 14 Natural Resources NCERT Book Extra Questions for Session 2021-2022 CBSE Board and UP Board Others state Board 2021-2022biologybiology chapter 14cbsechapter 14class9natural resourcesncertscience Share Facebook 1 Answer Voted Oldest Recent Bhavna 231 Questions 228 Answers 153 Best Answers 3k Points View Profile Best Answer Bhavna Added an answer on June 13, 2021 at 11:42 am Carbon monoxide (CO) is a toxic air pollutant. It is exhaled from motor vehicles as one of the exhaust gases, and also from cigarette smoke. Our blood has respiratory pigment, hemoglobin (Hb) in the erythrocytes (RBCs) and it has high affinity for oxygen. As a result, oxygen combines with hemoglobin in the lungs and is carried by blood to various body tissues as oxyhemoglobin (OHb). Carbon monoxide (CO), a poisonous gas, has 200 times more affinity for hemoglobin than oxygen. When the polluted air containing large amount of CO is inhaled, the CO then combines with hemoglobin to form a stable poisonous compound called carboxyhemoglobin (COHb). This drastically reduces the availability of oxygen to the body tissues and leads to suffocation and finally death. 4 Reply Share Share Share on Facebook Share on Twitter Share on LinkedIn Share on WhatsApp Leave an answerLeave an answerCancel reply Click on image to update the captcha. Save my name, email, and website in this browser for the next time I comment.