Oil rises up to wick in a lamp because_____________?
Correct answer: C. Capillary action phenomenon
- A. Oil is very light
- B. Oil is volatile
- C. Capillary action phenomenon
- D. Diffusion of oil through the wick
Explanation
Liquid oil climbs through the narrow pores of a wick because of capillary action, produced by adhesion to the wick and cohesion within the oil. Its lightness or volatility is not the cause.
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