JEE Main 2023 — States of Matter Question with Solution
JEE Main 2023 (24 Jan Shift 2)
Question
The number of statement's, which are correct with respect to the compression of carbon dioxide from point (a) in the Andrews isotherm from the following is _________.
A. Carbon dioxide remains as a gas upto point (b)
B. Liquid carbon dioxide appears at point (c)
C. Liquid and gaseous carbon dioxide coexist between points (b) and (c)
D. As the volume decreases from (b) to (c), the amount of liquid decreases
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Show full solutionCorrect answer: 2
Step-by-step explanation
Andrews noticed that at high temperatures isotherms look like that of an ideal gas and the gas cannot be liquefied even at very high pressure. As the temperature is lowered, shape of the curve changes and data shows considerable deviation from ideal behaviour.
Carbon dioxide remains as a gas only up to point .
At point , liquid of a particular volume appears. Further compression does not change the pressure. Liquid and gaseous carbon dioxide coexist and further application of pressure results in the condensation of more gas until the point is reached. At point , all the gas has been condensed and further application of pressure merely compresses the liquid as shown by steep line. A point like represents liquid state
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This is a previous-year question from JEE Main 2023, covering the States of Matter chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.