Engineering Thermodynamics
The specific heat at constant volume is

Any one of the above
The amount of heat required to raise the temperature of 1 kg of water through one degree
The amount of heat required to raise the temperature of unit mass of gas through one degree, at constant pressure
The amount of heat required to raise the temperature of unit mass of gas through one degree, at constant volume

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Engineering Thermodynamics
First law of thermodynamics

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

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