Chemistry-(general)
NEET Chemistry (general) MCQ Question
Type: MCQ-numerical-Medium-Class 11
If a process is carried out isothermally for an ideal gas and the external pressure is zero, what is the change in internal energy (ΔU) for this process?
A
ΔU = 0
B
ΔU > 0
C
ΔU < 0
D
Cannot be determined from given data
Correct Answer
Option A
Detailed Explanation
For isothermal expansion of an ideal gas into vacuum, both work (w) and heat (q) are zero, hence ΔU = 0 as per NCERT context in Chunk 3.
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