Entropy per unit mass question (ds)

[ksle82]

I'm attempting to answer these thermodynamic quesions about entropy. It's been years since my last thermo course so knowledge is cloudy. If I'm incorrect or missiong relevant answers, please help.

a. If ds = 0, what can you say about the process?
b. If ds < 0, what can you say about the process?
c. If ds1 < ds2, what can you conclude about these processes?

A. process is reversible
B. ds<0 <----is this possible?
C. ds1 is "more" reversible than ds2

 

[Cyrus]

a. yes
b. yes, its possible
c. yes, that's true.

 

[ksle82]

If it's possible for the answer B, then what can I say about the process? I don't recall learning anything about ds<0.

 

[siddharth]

What do you mean by "more" reversible? I don't understand. A process can either be reversible or irreversible. What do you mean when you say more reversible?

 

[Cyrus]

He means it has less irreversibilities.