A) the temperature of room will increase abnormally
B) the level of carbon dioxide will increase in the blood
C) the level of carbon monoxide will increase in the blood
D) the level of haemoglobin will increase in the blood
Correct Answer: C
Solution :
[c] Carbon monoxide will form by burning of coal in a closed room oxygen level decreased due to increase of carbon monoxide. Blood has more affinity to bind with carbon monoxide hence oxygen level in body decreased so it become fatal.
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