Q. 15 For a completely submerged body with centre of gravity 'G' and centre of buoyancy 'B', the condition of stability will be (A) G is located below B (B) G is located above B (C) G and B are coincident (D) independent of the locations of G and B Q. 16 In a power plant, water (density = 1000 kg/m) is pumped from 80 kPa to 3 MPa. The pump has an isentropic efficiency of 0.85. Assuming that the temperature of the water remains the same, the specific work (in kJ/kg) supplied to the pump is (B) 2.48 (D) 3.43 (A) 0.34 (C) 2.92 Which one of the following is a CFC refrigerant ? Q. 17 (A) R744 (C) R502 (B) R290 (D) R718