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Two flask A and B of equal volume are taken. Flask A contains \( \mathrm{H}_{2}(\mathrm{~g}) \) at \( 27^{\circ} \mathrm{C} \) and \( 1 \mathrm{~atm} \) pressure. Flask B contain \( \mathrm{N}_{2}(\mathrm{~g}) \) at \( 27^{\circ} \mathrm{C} \) and \( 2 \mathrm{~atm} \) pressure. Then select incorrect statements.
(A) Average kinetic energy per molecule is same for both
\( \mathrm{P} \)
(B) Number of molecules in both compartment are same.
W.
(C) Mass of \( \mathrm{H}_{2} \) is more than \( \mathrm{N}_{2} \).
(D) \( \left(\mathrm{U}_{\mathrm{rms}}\right)_{\mathrm{H}_{2}}\left(\mathrm{U}_{\mathrm{rms}}\right)_{\mathrm{N}_{2}} \)
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