Blast furnace gas is a very poisonous gas because of its predominantly high _______________ content?
Correct answer: C. CO
- A. H2O
- B. CO2
- C. CO
- D. CH4
Explanation
Blast furnace gas contains a substantial amount of carbon monoxide, which is highly poisonous because it combines with haemoglobin and prevents oxygen transport. Carbon dioxide is also present but is not the main cause of its severe toxicity.
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