Engineering Thermodynamics
The heat absorbed or rejected by the working substance is given by (where ds = Increase or decrease of entropy, T = Absolute temperature, and dQ = Heat absorbed or rejected)

δQ = T.ds
None of the listed here
dQ = ds/T
δQ = T/ds

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Engineering Thermodynamics
First law of thermodynamics

All of these
Enables to determine change in internal energy of the system
Provides relationship between heat, work and internal energy
Does not enable to determine change in entropy

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