When an ideal diatomic gas undergoes adiabatic expansion, if the increase in its volume is 0.5%, then the percentage change in the pressure of the gas is approximately:

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):