A glass chimney stops an oil lamp from smoking because:
Correct answer: C. Both to these
- A. It increases the supply of oxygen to the flame by convection
- B. The heat produced ensures complete
- C. Both to these
- D. Neither of these
Explanation
A glass chimney promotes convection, drawing more oxygen to the flame, and the improved air supply supports more complete combustion with less soot. Thus both stated effects are involved.
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