Question
In isothermal process, which of the following is not true?
Temperature remains constant
Internal energy does not change
No heat enters or leaves the system
none of the above
Solution
C.
No heat enters or leaves the system
In an isothermal process ( Temperature fixed), the ideal gas equation gives
PV = constant
i.e pressure of a given mass of gas varies inversely as its volume. In the isothermal process, heat enters or leaves the system, so keep the temperature constant, so statement (C) is wrong.
