{"id":85575,"date":"2025-06-01T03:21:49","date_gmt":"2025-06-01T03:21:49","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=85575"},"modified":"2025-06-01T03:21:49","modified_gmt":"2025-06-01T03:21:49","slug":"which-one-of-the-following-air-pollutants-combines-with-the-haemoglobi","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-air-pollutants-combines-with-the-haemoglobi\/","title":{"rendered":"Which one of the following air pollutants combines with the haemoglobi"},"content":{"rendered":"

Which one of the following air pollutants combines with the haemoglobin of human blood and reduces its oxygen-carrying capacity, leading to suffocation and may cause even death?<\/p>\n

[amp_mcq option1=”Chlorofluorocarbon” option2=”Fly ash” option3=”Carbon monoxide” option4=”Sulphur dioxide” correct=”option3″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC CDS-2 – 2016<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nCarbon monoxide (CO) is a toxic gas that readily binds to haemoglobin in red blood cells, forming carboxyhaemoglobin (COHb). This binding affinity is much higher than that of oxygen.
\n<\/section>\n
\nThe formation of carboxyhaemoglobin reduces the amount of haemoglobin available to transport oxygen from the lungs to the body’s tissues. This leads to oxygen deprivation, causing symptoms like headache, dizziness, nausea, and in severe cases, suffocation and death. Other listed pollutants do not primarily affect oxygen transport in this manner. Chlorofluorocarbons (CFCs) damage the ozone layer. Fly ash is particulate matter from combustion. Sulphur dioxide (SO\u2082) is a respiratory irritant and contributor to acid rain.
\n<\/section>\n
\nCarbon monoxide is produced from the incomplete combustion of carbon-containing fuels (e.g., in vehicles, furnaces, stoves). Because it is odourless, colourless, and tasteless, it is often called the “silent killer”.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one of the following air pollutants combines with the haemoglobin of human blood and reduces its oxygen-carrying capacity, leading to suffocation and may cause even death? [amp_mcq option1=”Chlorofluorocarbon” option2=”Fly ash” option3=”Carbon monoxide” option4=”Sulphur dioxide” correct=”option3″] This question was previously asked in UPSC CDS-2 – 2016 Download PDFAttempt Online Carbon monoxide (CO) is a toxic … <\/p>\n

Detailed SolutionWhich one of the following air pollutants combines with the haemoglobi<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1088],"tags":[1098,1136,1137],"class_list":["post-85575","post","type-post","status-publish","format-standard","hentry","category-upsc-cds-2","tag-1098","tag-environment-and-ecology","tag-pollution","no-featured-image-padding"],"yoast_head":"\nWhich one of the following air pollutants combines with the haemoglobi<\/title>\n<meta name=\"description\" content=\"Carbon monoxide (CO) is a toxic gas that readily binds to haemoglobin in red blood cells, forming carboxyhaemoglobin (COHb). This binding affinity is much higher than that of oxygen. The formation of carboxyhaemoglobin reduces the amount of haemoglobin available to transport oxygen from the lungs to the body's tissues. This leads to oxygen deprivation, causing symptoms like headache, dizziness, nausea, and in severe cases, suffocation and death. Other listed pollutants do not primarily affect oxygen transport in this manner. Chlorofluorocarbons (CFCs) damage the ozone layer. Fly ash is particulate matter from combustion. Sulphur dioxide (SO\u2082) is a respiratory irritant and contributor to acid rain.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-air-pollutants-combines-with-the-haemoglobi\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which one of the following air pollutants combines with the haemoglobi\" \/>\n<meta property=\"og:description\" content=\"Carbon monoxide (CO) is a toxic gas that readily binds to haemoglobin in red blood cells, forming carboxyhaemoglobin (COHb). This binding affinity is much higher than that of oxygen. The formation of carboxyhaemoglobin reduces the amount of haemoglobin available to transport oxygen from the lungs to the body's tissues. This leads to oxygen deprivation, causing symptoms like headache, dizziness, nausea, and in severe cases, suffocation and death. Other listed pollutants do not primarily affect oxygen transport in this manner. Chlorofluorocarbons (CFCs) damage the ozone layer. Fly ash is particulate matter from combustion. 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