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Question

If pressure of a gas contained in a closed vessel is increased by 0.4% when heated by 1C its initial temperature must be :

A
250 K
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B
250C
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C
2500 K
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D
25C
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Solution

The correct option is B 250 K
If pressure of a gas contained in a closed vessel is increased by 0.4% when heated by 1C its initial temperature must be 250 K
In a closed vessel V and n are constant.
PV=nRT
Hence, PT=PT
P(T+1)=1.004PT
T+1=1.004T
1=0.004T
Hence, T=250K

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