RE-NEET2024Chemistry-Thermodynamics
RE-NEET 2024 Chemistry Work and Heat in Thermodynamic Processes MCQ Question
Type: MCQ-conceptual-Medium-Class 11
Choose the correct statement for the work done in the expansion and heat absorbed or released when 5 litres of an ideal gas at 10 atmospheric pressure isothermally expands into vacuum until volume is 15 litres:
A
Both the heat and work done will be greater than zero
B
Heat absorbed will be less than zero and work done will be positive
C
Work done will be zero and heat will also be zero
D
Work done will be greater than zero and heat will remain zero
Correct Answer
Option C
Detailed Explanation
In an isothermal expansion into a vacuum, no work is done as there is no external pressure. Since the process is isothermal and into a vacuum, the internal energy change is zero, and thus the heat absorbed is also zero.
Found an issue with this question?