What will be the specific enthalpy of steam at 80°C having a dryness fraction of 0.9? [Given: specific enthalpy of saturated liquid water at 80°C = 335 kJ/kg; specific enthalpy of vaporization of water at 80°C = 2300 kJ/kg]

A body of mass 2 kg and Cp = 1.00 kJ/kg·K is at 600 K. If the atmosphere is at 300 K, the maximum work obtainable from the body till it comes to equilibrium with the atmosphere is:

The magnitude of work done when 1 mole of zinc dissolves completely in aqueous HCl in an open beaker at 27°C is (take R = 8.314 J K−1 mol−1):