Joule-Thomson effect i.e., a throttling process is a constant __________ process.

A. Entropy

B. Temperature

C. Internal energy

D. Enthalpy

Answer: Option D

Solution(By Examveda Team)

Joule – thomson throttling process is an iso-enthalpic process since pressure change is done at constant enthalpy that means a pressure change will occur but a corresponding internal energy change also occurs and enthalpy remains constant.
Since $$H = U + PV$$