For an ideal gas :

Options

A. The change in internal energy in a constant pressure process form temperatures `T_(1)` and `T_(2)` is equal to `nC_(v) (T_(2) - T_(1))` where `C_(v)` is the molar heat capacity at constant volume and n is the number of moles of the gas
B. The change in internal energy and the work done by the gas are equal in magnitude in an adiabatic process
C. The internal energy does not change in isothernal process
D. no heat is added or removed in an adiabatic process

Answer

A, B, C, D

Explanation

(1) `Delta U = nC_(v) (T_(2) - T_(1))` in all processes.
(2) `Delta U = - Delta W`
`|Delta U| = |Delta W|`
( `Delta Q = 0` for adiabatic process)
(3) `Delta U = 0` for isothermal process
(4) `Delta Q = 0` for adiabatic process