In an adiabatic process, no transfer of heat takes place between system and surroundings. Choose the correct option for free expansion of an ideal gas under adiabatic condition from the following.

In an adiabatic process, no transfer of heat takes place between syste

1.	In an adiabatic process, no transfer of heat takes place between system and surroundings. Choose the correct option for free expansion of an ideal gas under adiabatic condition from the following.
Answer» `Q=0, DELTAT ne 0, W=0` `q ne0, DeltaT=0, W=0` `q=0, DeltaT=0, W=0` `q=0, DeltaT lt 0, W ne 0` Solution :For free expansion (i.e. in vacuum), `P_("EXT")=0`. Thus, `W-P_("EX")DeltaV=0` `therefore""DeltaU=q+W=0` which is true for isothermal PROCESS where T is constant i.e., `DeltaT=0.`