Question

wanted full solution

Answer 1

answer is option B,C,D

(A) Process-I is not isochoric, V is decreasing. 
(B) Process-II is isothermal expansion 
ΔU = 0, W > 0 
ΔQ > 0 
(C) Process-IV is isothermal compression, 
ΔU = 0, W < 0 
ΔQ < 0 
(D) Process-I and III are NOT isobaric because in isobaric process T ∝ V hence isobaric T–V graph will be linear.

Answer 2

$\huge\underline\mathfrak{Answer}$