STANDARD Physics Phase Changes MCQ Question
A block of ice at −8°C is slowly heated and converted to steam at 100°C. Which of the following curves represents the phenomena qualitatively?
(1)
(2)
(3)
(4)
Correct Answer
Detailed Explanation
When heat is supplied, the temperature of ice increases from −10°C to 0°C, represented by a straight line inclined to the heat axis. At 0°C, the heat is used in converting ice into water, and then water to steam at 100°C.
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