JEE Main 2026 · 6 Apr · Shift 1 · Chemistry Q55

ChemistrySingle correct+4 / -1Question 55 of 75

Arrange the following isothermal processes in order of the magnitude of the work (p − V) involved between states 1 and 2.

A. Expansion in single stage $w_A$

B. Expansion in multi stages $w_B$

C. Compression in single stage $w_C$

D. Compression in multi stages $w_D$

Choose the correct option.

|w_B|>|w_A|>|w_C|>|w_D|

|w_C|>|w_D|>|w_A|>|w_B|

|w_C|>|w_D|>|w_B|>|w_A|

|w_B|>|w_A|>|w_D|>|w_C|

Answer and worked solution

Official answer: C

Isothermal work.

Compression needs more work than the reversible minimum. A single stage needs the most, multistage less.
Expansion delivers less than the reversible maximum. Multistage delivers more than a single stage.

Order: $|w_C|>|w_D|>|w_B|>|w_A|$ .

(C)

Topics:First law and enthalpy

JEE Main 2026 · 6 Apr · Shift 1, Chemistry question 55