What is true for an adiabatic process ?

$\mathrm{\Delta }U\backslash Delta\; U$  = 0 is true for

When a gas expands in vacuum, the work done by the gas is

When a sample of an ideal gas is allowed to expand at constant temperature against an atomospheric pressure,

In what reaction of the following work is done by the system on the surroundings ?

A gas does 0.320 kJ of work on its surroundings and absorbs 120 J of heat from the surroundings. Hence,$\mathrm{\Delta }U\backslash Delta\; U$ is

For an isothermal and reversible expansion of 0.5 mol of an ideal gas, Wmax is -3.918 kJ. The value of $\mathrm{\Delta }U\backslash Delta\; U$ is

The mathematical expression of the first law of thermodynamics for an adiabatic process is

A gaseous system absorbs 600 kJ of heat and performs the work of expansion equal to 130 kJ. The internal energy change is

When a gas is compressed, the work obtained is 360 J while the heat transferred is 190 J. Hence the change in internal energy is