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Wednesday, 15 April 2026
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Physics Past Questions and Answers

Topic: The influence of pressure and of dissolved substances on boiling and melting points

Jamb Physics Questions - The influence of pressure and of dissolved substances on boiling and melting points

Question 1:
I. Increase the melting point of the liquid.
II. Increase the boiling point of the liquid.
III. Decrease the melting point of the liquid.
IV. Decrease the boiling point of the liquid.
which of the statement above about the effect on increase in pressure in a liquid are correct?
  • A I and II only
  • B I and III only
  • C II and III only
  • D III and IV only
View Answer & Explanation
Question 2:
Food cook quicker in salt water than in pure water because of the effect of
  • A Dissolved substances on the boiling point
  • B Atmospheric pressure on the boiling point
  • C Food nutrients on the thermal energy
  • D Salts on the thermal conductivity of water
View Answer & Explanation
Question 3:
The melting point of a substance is equivalent to its
  • A Vapour Pressure
  • B Solidification Temperature
  • C Liquidification Temperature
  • D Solidification Pressures
View Answer & Explanation