Verified Solution • 2025–26 Session moderate

QPage 33: Q10: HC Verma: Concepts of Physics - Volume 2 Kinetic Theory of Gases Page 33: Q10 Solution: The pressure of a gas kept in an isothermal container is 200…

⚠️ Common Exam Traps & Conceptual Pitfalls

Students often confuse isothermal conditions with adiabatic or constant volume scenarios where pressure might not scale linearly with the amount of gas. In an isothermal container, temperature is constant, so pressure is directly proportional to the number of moles ($P \propto n$); halving the gas halves the pressure.

The pressure of a gas kept in an isothermal container is 200 kPa. If half the gas is removed from it, the pressure will be

Multiple Choice Options

  • A 100 kPa
  • B 200 kPa
  • C 400 kPa
  • D 800 kPa

Step-by-Step Verified Solution

**Answer:** (a) 100 kPa. **Step-by-Step Explanation:** For an isothermal container, T is constant. P = nRT/V. If half the gas is removed, n becomes n/2, so P becomes P/2 = 100 kPa.

All Questions in this Chapter

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