A) A gas can be liquefied at when \[T={{T}_{C}}\] and \[p<{{p}_{c}}\]
B) The gas gets heated if its temperature is less than its inversion temperature in Joule-Thomson effect.
C) It is possible to liquefy an ideal gas.
D) Average speed of molecules of a gas in a container moving only in one dimension will be zero.
Correct Answer: D
Solution :
[d] 1. INCORRECT. Since p should be equal to or greater than \[{{p}_{c}}\] 2. INCORRECT. Heating is observed when \[T>Ti\] 3. INCORRECT. Since there exist no forces of attraction amongst the molecules of an ideal gas 4. CORRECT. Since otherwise, with time all molecules will be collected in one direction.
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