A) is carcinogenic
B) impairs respiration
C) is combustible
D) none of these.
Correct Answer: B
Solution :
: Carbon monoxide, produced by gas heaters, charcoal stoves, coal mines etc. corubines with haemoglobin, producing carboxyhaemoglobin or\[COHb\]. At 50 ppm, CO converts 7.5% of haemoglobin into carboxy-haemoglobin within 8 hours. It impairs oxygen transport resulting in suffocation, giddiness, headache, decreased vision, cardiovascular malfunction and asphyxia.
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