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

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

A

B

C

D

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The correct Answer is:
C
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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ALLEN-GEOMETRICAL OPTICS-EXERCISE - 05 (B)
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  2. 2kg of ice at -20^@C is mixed with 5kg of water at 20^@C in an insulat...

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  3. Liquid oxygen at 50K is heated at 300K at constant pressure of 1at. Th...

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