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JAMB Chemistry 2005 Question 23

Question 23

Separation of Mixtures

Kerosine is commonly used to remove the red colour stain of palm oil from clothes because it

  1. A.helps to spread the oil over a larger surface area
  2. B.reacts with the oil to form an odourless compound
  3. C.makes the oil evaporate easily by dissolving it
  4. D.helps to dilute the oil and reduce its colour.
Show the answer and explanation

Answer: C (makes the oil evaporate easily by dissolving it)

Explanation

Palm oil is non-polar and dissolves in kerosene (a non-polar solvent); the volatile solvent then evaporates and carries the stain away.