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Question

p−T diagram was obtained when a given mass of gas was heated. During the heating process from the state 1 state 2 the volume.
1106862_af6df491e949418ea88d56763c3199fa.png

A
Increased
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B
Decreased
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C
Remained constant
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D
Changed erratically
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Solution

The correct option is A Increased
Let For state 1
Pressure is P1
Temperature is T1
Volume is V1
For state 2
Pressure is P2
Temperature is T12
Volume is V2
From diagram we can say that
θ1>θ2
Slop of sate 1 is greater than state 2
P1T1>P2T2
From ideal gas law
PV=nRT
PT=nRV
Now,
1V1>1V2
V2>V1
Therefore, volume will increase from state 1 to state 2,correct option is A.

1867169_1106862_ans_97668db9580843feac6323d0c07e6836.PNG

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