During the reversible isothermal expansion of an ideal gas,the change in internal energy is......

Identify the correct equation relating enthalpy $(H)$ and internal energy $(E)$.

Energy can be transferred from a system to the surroundings as work if $.....$

Which of the following is a path function?

Fill in the blanks:
$(i)$ During the ........... process,there is no absorption or evolution of heat.
$(ii)$ The equation $\Delta G = \Delta H - T\Delta S$ was proposed by ........... .

The number of extensive and intensive properties in the list given below is respectively: density,enthalpy,mass,temperature,volume,pressure.