Select the most accurate response. An externally reversible process is one thatQuestion 4Select one:a.has no heat transfer, dQ=0b.does no work, dW=0c.occurs at constant volume, dV=0d.exchanges heat dQ with its surroundings only through an infinitesimal temperature difference dTe.exchanges an infinitesimal amount of heat dQ with the surroundings, which must be colder than the contents of the systemf.A and B

For an internally reversible process on a closed stationary system of a simple compressible substance:Question 4Select one:a.TdS = dU – PdVb.TdS > dU +PdVc.TdS = dh + VdPd.TdS = dU + PdV

The temperature of a cold drink in a warm room rises with time as a result of heat transfer. Is this a reversible process?Question 1Select one:a.Yesb.No

The ideal vapour-compression refrigeration cycle is not a reversible cycle becauseQuestion 1Select one or more:a.heat input is not isothermal across an infinitesimal temperature differenceb.the ideal compression process is non-isentropicc.heat rejection is not isothermal across an infinitesimal temperature differenced.expansion process through the throttling valve is irreversiblee.phase changes that occurring during heat input and output cannot be reversed

All isothermal processes are necessarily internally reversibleQuestion 5Select one:a.TRUEb.FALSE

If a closed piston-cylinder system is cycled fast enough, the process approaches reversibility.Question 10Select one:a.TRUEb.FALSE