Which of the following gases is having the widest explosion limit (about 2 to 81% gas in gasair mixture), rendering it the property of the most explosive gas ?
Correct answer: B. Acetylene
- A. Hydrogen
- B. Acetylene
- C. Carbon monoxide
- D. Ammonia
Explanation
Acetylene has an exceptionally wide flammability range in air, approximately 2 to 81% by volume, so it can form explosive mixtures over a broad composition range. Hydrogen is also highly flammable, but its usual range is narrower.
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