AIPMT PRELIMS2001Chemistry-Thermodynamics
AIPMT PRELIMS 2001 Chemistry First Law of Thermodynamics MCQ Question
Type: MCQ-conceptual-Medium-Class 11
When 1 mol gas is heated at constant volume temp. is raised from 298 to 308 K. Heat supplied to the gas is 500 J. Then which statement is correct : -
A
q = w = 500 J, ΔU = 0
B
q = ΔU = 500J, w = 0
C
q = w = 500 J, ΔU = 0
D
ΔU = 0, q = w = – 500 J
Correct Answer
Option B
Detailed Explanation
At constant volume, work done (w) is zero, so the heat supplied is equal to the change in internal energy (ΔU). Therefore, q = ΔU = 500 J.
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