For separating small pieces of metal from engine oil of a car, the best separating technique is the _____________________ ?
Correct answer: C. Filtration
- A. Chromatography
- B. Evaporation
- C. Filtration
- D. Fractional distillation
Explanation
Filtration retains solid metal particles on a porous medium while allowing the liquid oil to pass through. Distillation and evaporation separate components by volatility, and chromatography is unsuitable for this bulk solid-liquid separation.
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