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JAMB Physics 2006 Question 49

Question 49

Change of State and Vapours

At low humidity in an environment, the human skin is usually

  1. A.dry and smooth.
  2. B.damp and smooth.
  3. C.damp and rough.
  4. D.dry and rough.
Show the answer and explanation

Answer: D (dry and rough.)

Explanation

When the air is dry, moisture evaporates quickly from the skin, leaving it dry and rough (cracked lips and skin in harmattan).