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

If 'n' is changing, 'V' must also be changing.

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If 'n' is constant, 'V' must be constant.

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If 'n' is constant, 'V' must be changing.

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If 'n' is changing, 'V' must be constant.

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Solution

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: $P V = n R T$ .
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.

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