Heat and Thermodynamics 1 Question 22
22. The variation of temperature of a material as heat is given to it at a constant rate as shown in the figure. The material is in solid state at the point $O$. The state of the material at the point $P$ is . . .
$(1985,2 M)$
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Answer:
Correct Answer: 22. partly solid and partly liquid.
Solution:
- $O$ to $A \longrightarrow$ material is in solid state (only temperature is increasing).
$A$ to $B \longrightarrow$ material is partially solid and partially in liquid state.
$B$ to $C \longrightarrow$ material is in liquid state.
$C$ to $D \longrightarrow$ material is partially liquid and partially in vapour state.
