Which of the following is not a variable state?

The correct option is B) Temperature, pressure, volume are examples of state variables. The path variable is defined as the variable which depends on the specific value that is reached.

Is entropy a state variable?

Entropy is not a state variable, and there is a physical difference between it and internal energy. Internal energy is a state quantity, and entropy is only a process quantity.

Is temperature a state variable?

In this law, one state variable (e.g., pressure, volume, temperature, or the amount of substance in a gaseous equilibrium system) is a function of other state variables so is regarded as a state function.

Which of the following is not a thermodynamics state variable?

Work done is a path function (as it depends on the curve also called path) that is it is not a thermodynamic state function. So, the correct answer is option B that is work done.

Which of the following is not a state function heat?

For heat at constant volume is equal to change in internal energy from the first law of thermodynamics. So, it is also a state function. Therefore, among the following, only work-done in an isothermal process is not a state function. Hence, the correct option is B.

Is entropy dependent on temperature?

Affecting Entropy Several factors affect the amount of entropy in a system. If you increase temperature, you increase entropy. (1) More energy put into a system excites the molecules and the amount of random activity. (2) As a gas expands in a system, entropy increases.

Is pressure a state function?

Pressure is a measure of the average force exerted by the constituent molecules per unit area on the container walls. Pressure does not depend on the path of the molecules and thus it is a state function.

Why is pressure a state variable?

We define a cyclic process as a process in which the thermodynamic parameters of the system reaches its initial values and pressure is one of the known thermodynamic parameters. So in cyclic process, the change in pressure is zero and hence it is a state function.

Which of the following is a state variable?

Answer: Heat. The state variable is defined as the variable which depends only on the initial and final state irrespective of the final state. Temperature, pressure, volume are examples of state variables.

Which of the following variables are state variables?

Variable like P,V and T are called state variable (or state functions) because their values depend only on the state of the system and not on how it is reached.