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A gas may expand either adiabatically or...

A gas may expand either adiabatically or isothermally. A number of `p-V` curves are drawn for the two processes over different ranges of pressure and volume, it will be found that
(i) Two adiabatic curves do not intersect
(ii) two isothermal curves do not intersect
(iii) an adiabatic curve and an isothermal curve may intersect.
(iv) the magnitude of the slope of an adiabatic curve is greater than the magnitude of the slope of an isothermal curve

A

two adiabatic curves do not intersect

B

two isothermal curves do not intersect

C

an adiabatic curve and an isothermal curve may intersect

D

the magnitude of the slope of an isothermal curve for the same values of pressure and volume

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