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Liquid oxygen at 50 K is heated to 300 K...

Liquid oxygen at `50 K` is heated to `300 K` at constant pressure of `1 atm`. The rate of heating is constant. Which of the following graphs represents the variation of temperature with time?

A

B

C

D

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The correct Answer is:
C
At first temperature will increase then there will be state change from liquid to gas.
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