JAMB - Physics (1981 - No. 16)
Heat was supplied to a block of ice at 0oC until half of it melted. Which of the following statements is true?
the temperature rises and the ice expand
the temperature remains constant and the volume of the ice decreases
the ice gives out heat as it melts and the temperature decreases
the mass remains constant and the temperature increases
the temperature decreases because some heat is lost