Straight run petrol as compared to methyl/ethyl alcohol has_________________?
Correct answer: B. Lower octane number
- A. Lower calorific value
- B. Lower octane number
- C. Higher specific gravity
- D. Higher ignition temperature
Explanation
Straight-run petrol generally has a lower octane number than alcohol fuels, because alcohols have high resistance to knocking. Petrol has a higher heating value, so lower calorific value is not the correct comparison.
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