Limitations of First Law of Thermodynamics

What is the limitation of the first law of thermodynamics?

The limitation of 1 st law of thermodynamics is

State and explain first law of thermodynamics. Discuss the application of first law of thermodynamics to (i) isothermal process, (ii) adiabatic process.

Discuss the application of the first law of thermodynamics to an isothermal process.

Discuss the application of first law of thermodynamics to an isobaric process.