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JAMB Physics 2008 Question 23

Question 23

Change of State and Vapours

The diagram above is the heating curve for a solid. QR is the

Diagram for this question
  1. A.melting region.
  2. B.boiling region.
  3. C.sublimation region.
  4. D.evaporating process.
Show the answer and explanation

Answer: A (melting region.)

Explanation

PQ shows the solid warming up. Along QR the temperature stays constant while heat is absorbed as the solid turns to liquid, so QR is the melting region.