AIPMT PRELIMS2004Chemistry-Thermodynamics
AIPMT PRELIMS 2004 Chemistry Work Done by Gases MCQ Question
Type: MCQ-numerical-Medium-Class 11
The work done during the expansion of a gas from a volume of 4 dm³ to 6 dm³ against a constant external pressure of 3 atm is :-
A
–608 J
B
+304 J
C
–304 J
D
–6 J
Correct Answer
Option A
Detailed Explanation
Work done (W) is calculated using W = –PΔV. Here, P = 3 atm, ΔV = 2 dm³ = 2 × 10⁻³ m³. Converting atm to J, W = –3 × 101.3 × 2 = –304 J.
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