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Question

Perfect gases of a given mass are heated first in a small vessel and then in a large vessel, such that their volume remains unchanged. The PT curves are:

A
parabolic with same curvature
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B
parabolic with different curvature
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C
linear with same slope
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D
linear with different slope
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Solution

The correct option is C linear with different slope
According to ideal gas equation,
PV=nRT
PnT (at constant V)
thus, PT curves are linear but with different slopes depending on n.

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