Question
Question: The following figure represents the temperature versus time plot for a given amount of a substance w...
The following figure represents the temperature versus time plot for a given amount of a substance when heat energy is supplied to it at a fixed rate and at a constant pressure. Which part of the above plot represent a phase change ?
A
a to b and e to f
B
b to c and c to d
C
d to e and e to f
D
b to c and d to e
Answer
b to c and d to e
Explanation
Solution
During change in phase temp. remains const. So b to c & d to e represents phase change.