Question

Consider the following statements (a) q is state function in Isochoric process (b) w is state function in isobaric process (c) Work done by the system will be zero in adiabatic free expansion Correct among the following is/are (1) (a) only (2) (b) only (3) (b) & (c) (4) (a), (b) & (c) ​

Answer 1

Answer:

The correct option is D (a),(b) and (c)

Explanation:

Because

ΔU = q + w, w = -$Pext$ΔV

where,

q = ΔU in an isochoric process as ΔV = 0.

w = ΔU in an adiabatic process as q = 0.

$Pext$ = 0 in an adiabatic process as q = 0.

So, the correct option is D.