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Question

By what percentage should the pressure of the given mass of gas be increased so to decrease its volume by 10% at a constant temperature?

A
5%
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B
7.2%
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C
12.5%
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D
11.1%
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Solution

The correct option is D 11.1%

When T is Constant , pV = Constant
When volume is decreased by 10% i.e,. volume become 90100 the pressure must become 10090
Therefore % increase in pressure =(10090)×10090=11.1%


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