The temperature at which the velocity of sound in \( \mathrm{P} \) ...

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The temperature at which the velocity of sound in
\( \mathrm{P} \) oxygen will be the same as that of nitrogen at \( 15^{\circ} \mathrm{C} \) is
W
(1) \( 112^{\circ} \mathrm{C} \)
(2) \( 72^{\circ} \mathrm{C} \)
(3) \( 56^{\circ} \mathrm{C} \)
(4) \( 17^{\circ} \mathrm{C} \)
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