For each of these statements indicate whether they are TRUE

For each of these statements indicate whether they are TRUE or FALSE

a) The Clausius statement of the 2nd law denies the possibility of transferring energy by heat from cooler to a hotter body.

b) The 2nd Carnot corollary states that all power cycles operating between two different thermal reservoirs have the same thermal efficiency.

c) Mass, energy, and entropy are examples of intensive properties.

d) A refrigeration cycle operating without the input of external work conforms to the Clausius statement of the 2nd law.

e) The 0K temperature is well within reach in any actual process.

Solution

a) TRUE : No process is possible whose sole result is the transfer of heat from a cooler to a hotter body. [Clausius statement of the second law]

b) TRUE : The efficiency of a reversible heat engine is a function only of the respective temperatures of the hot and cold reservoirs.

c) FALSE : An intensive property doesn\'t change when we change the size of sample. So Mass, Energy and Entropy all are are Extensive Properties. Specific weight, Specific Energy, Specific Entropy are Intensive properties.

d) FALSE : Refrigeration cycle include transfer of heat from Cold body to Hot body.\"It is impossible to construct a device which operates on a cycle and produces no other effect than the transfer of heat from a cooler body to a hotter body.\" Clausius Statement.

e) FALSE: as per third law of thermodynamics \"Entropy is zero at 0K\" but Nernst classical formulation is It is impossible for any process, no matter how idealized, to reduce the entropy of a system to its absolute-zero value in a finite number of operations.