If a gas expands at constant temperature, it indicates thatA. kinetic energy of molecules remains the sameB. number of the molecules of gas increasesC. kinetic energy of molecules decreasesD. pressure of the gas increases

If a gas expands at constant temperature, it indicates thatA. kinetic

1.	If a gas expands at constant temperature, it indicates thatA. kinetic energy of molecules remains the sameB. number of the molecules of gas increasesC. kinetic energy of molecules decreasesD. pressure of the gas increases
Answer» Correct Answer - A The average translational KE of one molecule of an ideal gas is as follows : `K_(t)=(KE)/(N_(A))=(3//2RT)/(N_(A))=(3)/(2)KT` when `R//N_(A)`= Boltzmann constant `"i.e., "E_(t) prop T` Thus, at constant temperature KE of molecules remains same.

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If a gas expands at constant temperature, it indicates thatA. kinetic energy of molecules remains the sameB. number of the molecules of gas increasesC. kinetic energy of molecules decreasesD. pressure of the gas increases

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