Which of the following are state property?
(A) Internal energy ($U$)
(B) Volume ($V$)
(C) Heat ($q$)
(D) Enthalpy ($H$)

Hint: An energy structure intrinsic in each framework is the inner energy, which emerges from the atomic condition of movement of issue. The symbol $U$ is utilized for the interior energy and the unit of estimation is the joules ($J$).

Complete step by step answer:
State property is a property that relies just upon the state factors and doesn't rely upon the way taken to arrive at that state, similar to pressure, volume, temperature, Internal energy and so forth Internal energy is a state property since it relies just upon temperature which is a state variable while work and potential energy rely upon the way and since heat relies upon work so heat is likewise a way needy property.
Internal energy, volume and enthalpy are state properties. Their qualities are free of the way picked to arrive at a specific state. Warmth is a way to work. It's worth relying upon the way picked to arrive at a specific state.
So the answer is option A.

Additional Information
Internal energy $U$ of a System or a body with all around characterized limits is all out of the dynamic energy because of the movement of particles and the potential energy related with the vibrational movement and electric energy of iotas internal atoms. Interior energy additionally remembers the energy for all the compound bonds. From an infinitesimal perspective, the interior energy might be found in various structures. For any material or repugnance between the individual atoms.
Internal energy is a state capacity of a System and is a broad amount. One can have a related serious thermodynamic property called explicit Internal energy, usually represented by the lowercase letter u, which is Internal energy per mass of the substance being referred to. As such the SI unit of explicit inward energy would be the ${\raise0.7ex\hbox{$J$} \!\mathord{\left/
 {\vphantom {J g}}\right.}
\!\lower0.7ex\hbox{$g$}}$. In the event that the Internal energy is communicated on a measure of substance premise, at that point it very well may be alluded to as molar inward energy and the unit would be the ${\raise0.7ex\hbox{$J$} \!\mathord{\left/
 {\vphantom {J {mol}}}\right.}
\!\lower0.7ex\hbox{${mol}$}}$.


Note:
Internal energy $U$ of a System or a body with very much characterized limits is the all out of the dynamic energy because of the movement of particles and the potential energy related with the vibrational movement and electric energy of iotas Internal Inward energy is significant for understanding stage changes, compound responses, atomic responses, and numerous other minute wonders, as the potential energies among particles and molecules are significant.