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JEE Main2013PhysicsKinetic Theory of GasesActual

There are two identical chambers, completely thermally insulated from surroundings. Both chambers have a partition wall dividing the chambers in two compartments. Compartment 1 is filled with an ideal gas and Compartment 3 is filled with a real gas. Compartments 2 and 4 are vacuum. A small hole (orifice) is made in the partition walls and the gases are allowed to expand in vacuum. Statement-1: No change in the temper

Options

  1. AStatement-1 is false and Statement-2 is true.
  2. BStatement-1 and Statement-2 both are true. Statement-2 is the correct explanation of Statement-1.
  3. CStatement-1 is true and Statement- 2 is false.
  4. DStatement-1 and Statement-2 both are true. Statement-2 is not correct explanation of Statement-1.

Correct answer

A. Statement-1 is false and Statement-2 is true.

Step-by-step solution

In ideal gases the molecules are considered as point particles and for point particles, there is no internal excitation, no vibration and no rotation. For an ideal gas the internal energy can only be translational kinetic energy and for real gas both kinetic as well as potential energy.

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