The Heat transfer Q, the work done W and the change in internal energy U are all zero in the case of
(a) a rigid vessel containing steam at 1500C left in the atmosphere which is at 250C
(b) 1 kg of gas contained in an isulated cylinder expanding as the piston moves slowly outwards
(c) a rigid vessel containing ammonia gas connected through a valve to an evacuated rigid vessel, the vessel, the valve and the connecting pipes being well insulated and the valve being opened and after a time, condition through the two vessel becoming uniform
(d) 1 kg of air flowing adiabatically form the atmosphere into a previously evacuated bottle