The specific heats of an ideal gas at constant pressure and constant volume are 525 J ${(k{g^ \circ }C)^{( - 1)}}$ and $315{\rm{J}}{\left( {{\rm{kg^\circ C}}} \right)^{ - 1}}$ respectively. Its density at NTP is

$1.75{\rm{kg}}{{\rm{m}}^{ - 3}}$

$0.64{\rm{kg}}{{\rm{m}}^{ - 3}}$

$1.20{\rm{kg}}{{\rm{m}}^{ - 3}}$

$2.62{\rm{kg}}{{\rm{m}}^{ - 3}}$

NEET UG PHYSICS MCQ: THERMODYNAMICS

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Application +4 | -1

The specific heats of an ideal gas at constant pressure and constant volume are 525 J

{(k{g^ \circ }C)^{( - 1)}}

and

315\mathrm{J}{\left( {\mathrm{kg^\circ C}} \right)^{ - 1}}

respectively. Its density at NTP is

View answer and explanation

Correct option: C

1.75\mathrm{kg}{\mathrm{m}^{ - 3}}

Option C (

1.75\mathrm{kg}{\mathrm{m}^{ - 3}}

) is correct because the density is calculated using the gas constant, the difference between specific heats, and the ideal gas law.