Smoke point of a test sample of kerosene is found to be 15 mm. On removal of ________________ from it, the smoke point rises to 25 mm?
Correct answer: C. Aromatics
- A. n-paraffins
- B. Olefins
- C. Aromatics
- D. None of these
Explanation
Aromatics have a strong tendency to form soot during kerosene combustion, lowering the smoke point. Removing aromatics therefore raises the smoke point from 15 to 25 mm, whereas removing paraffins would generally have the opposite effect.
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