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NEET levelSingle correct optionDifficulty 1 of 3ig167

The kinetic energy of one mole of an ideal gas at temperature $T$ (translational only) is

A $\frac{3}{2} RT$
B $\frac{1}{2} RT$
C $RT$
D $3 RT$

Answer: A

From kinetic theory,

P V = \frac{2}{3} K E

and

P V = RT

for one mole, giving

K E = \frac{3}{2} RT

per mole.

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