Solved Example: 9903-01

The Vander Waals equation of state is \[\left( {p + \dfrac{a}{{{v^2}}}} \right)\left( {v - b} \right) = RT,\] where p is pressure, v is specific volume, T is temperature and R is characteristic gas constant. The SI unit of a is: (GATE ME 2015 Shift II)

A. $J/kg. K$

B. $m^3/kg$

C. $m^5/kgs^2$

D. $Pa/kg$

Correct Answer: C

Solved Example: 9904-01

The value of compressibility factor, Z at the critical state of a Van der Waal's gas is: (UPPSC AE Mech Paper II Dec 2020)

A. 3.735

B. 0.735

C. 3.375

D. 0.375

Correct Answer: D