Question
When water is cooled to a temperature $x$, it gets converted into ice at temperature $x$ by a process called $P$. And when ice at temperature $x$ is warmed, it gets reconverted into water at the same temperature $x$ in a process called $Q$.
  1. What is the value of temperature $x$ in Kelvin?
  2. What is the process $P$ known as?
  3. What is the name of energy released during process $P$?
  4. What is the process $Q$ known as?
  5. What is the name of energy absorbed during process $Q$?

Answer

  1. $273\ K$.
  2. The name of the process is freezing.
  3. Latent heat of freezing.
  4. Melting.
  5. Latent heat of fusion.

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