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

Ans. True,Clausius statement says that without any external effort (machine) it is impossible to transfer heat from cooler body to hotter body.

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

Ans. False, It is 1st carnot corollary. 2nd carnot corollary states that \"The efficiency of a reversible heat engine is a function only of the respective temperatures of the hot and cold reservoirs. It can be evaluated by replacing the ratio of heat transfers QL and QH by the ratio of temperatures TL and TH of the respective heat reservoirs.\"

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

Ans. False, it is extensive property.intensive property are density, pressure, temprature etc...

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

Ans. False, Without external work refrigeration cycle will not work. Clausius statement says that without any external effort (machine) it is impossible to transfer heat from cooler body to hotter body.