The isentroic specific work done by the pump in kJ/kg is

Question

A pump handling  a liquid raises its pressure from 1 bar to 30 bar. Take the density of the liquid as 990 kg/m³. The isentroic specific work done by the pump in kJ/kg is                                                                                

      (a) 0.10                                                               (b) 0.30

      (c) 2.50                                                               (d) 2.93