Physics · Oct / Nov 2022 · Paper 11 · Question 21
5054Melting, boiling and evaporation
A kilogram of a substance has a fixed shape. Thermal energy supplied to the substance weakens the forces of attraction between its molecules. What is happening?
- AA gas is being heated.
- BA liquid is at its boiling point.
- CA liquid is evaporating.
- DA solid is at its melting point.
As printed in the paper
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Correct answer: D. A solid is at its melting point.
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