UPSC CDS I 2019 GK Paper

In thermodynamics, a state function is the property of the system whose value depends only on the initial and final state of the system and is independent of the path. Therefore, Internal energy (ΔE) = q + W. It is a state function because it is independent of the path. It is an extensive property. Gibbs energy (G) = H – TS is also a state function because it is independent of the path.