Which one of the following equations does not correctlyrepresents the first law of thermodynamics for the given process ?

Which one of the following equations does not correctlyrepresents the

1.	Which one of the following equations does not correctlyrepresents the first law of thermodynamics for the given process ?
Answer» isothermal PROCESS`:q= - w` cyclic process `: q= - w` isochoric process `: DELTAE = q` ADIABATIC process `: DeltaE = -w` SOLUTION :According to1st law of thermodynamics, `DeltaE = q+w` Forisothermal process, `DeltaE = 0`. Hence,`q= - w` For cyclic process,`DeltaHE =0`. Hence, `q= -w` For isochoric process , `DeltaV =0`. Hence,`DeltaE =q``( w= P DeltaV= 0)` For adiabaticprocess, `q=0`. Hence, `DeltaE= w`. For expansion into vacuum , `w=0` . Hence, `DeltaE=q`. Thus, only(d) is incorret.