STANDARDPhysics-Thermodynamics
STANDARD Physics Internal Energy MCQ Question
Type: MCQ-conceptual-Medium-Class 11
For the reaction of one mole of zinc dust with one mole of sulphuric acid in a bomb calorimeter, ΔU and w correspond to
A
U < 0, w = 0
B
U < 0, w < 0
C
U > 0, w = 0
D
U > 0, w > 0
Correct Answer
Option A
Detailed Explanation
The reaction in a bomb calorimeter proceeds at constant volume so, w = 0 and ΔU = q. The reaction is exothermic, releasing heat and lowering internal energy. Hence, ΔU < 0, w = 0.
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