GATE 2019: Thermodynamics Quiz 6

List-I gives some processes of steam and list-II gives the effect due to the processes. Match List-I with List-II, and select the correct answer using codes given below the lists:
List-I
A- As saturation pressure increases
B- As saturation temperature increases
C- As saturation pressure decreases
D- As dryness fraction increases
List-II
1- Entropy increases
2- Specific volume decreases
3- Enthalpy of evaporation decreases
4- Saturation temperature increases

What will be the external work done during evaporation and internal latent heat of steam. If a certain amount of steam is produced at a pressure of 9 bar and dryness fraction 0.8,
At 9 bar, from steam tables, v_g = 0.250 m³/kg, h_fg = 2056.5 kJ/kg

A certain mass of a pure substance undergoes an irreversible process from state 1 to state 2, the path of the process being a straight line on the T-s diagram. Calculate the work interaction. Some of the properties at the initial and final states are: T₁ = 330 K, T₂ = 440 K, U₁ = 170 kJ, U₂ = 190 kJ, H₁ = 220 kJ, H₂ = 247 kJ and S₁ = 0.23 kJ/K and S₂ = 0.3 kJ/K, where T, U, H and S represent temperature, internal energy, enthalpy and entropy respectively.