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Liquid oxygen at 50 K is heated to 300 K at a constant pressure of 1 atm . The rate of heating is constant. Among the following graphs that represent the variation of temperature with time is

Correct answer

2

Step-by-step solution

Temperature of liquid oxygen will first increase in the same phase. Then, phase change ( liquid to gas) will take place. During which temperature will remain constant. After that temperature of oxygen in gaseous state will further increase.

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