Question

Select the correct option for an ideal gas undergoing a process as shown
in diagram.

• A. If 'n' is changing, 'V' must also be changing.
• B. If 'n' is constant, 'V' must be constant.
• C. If 'n' is constant, 'V' must be changing.
• D. If 'n' is changing, 'V' must be constant.

Answer 1

Answer: (A), (B)

The correct options are
A If 'n' is constant, 'V' must be constant.
B If 'n' is changing, 'V' must also be changing.

Ideal gas equation: $PV=nRT$.
Here, P and T are direct proportional at all time means so as we increase volume, n should be increased. And also if 'n' is constant, 'V' will be constant.