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An open flaskh has Helium gas at 2 atm a...

An open flaskh has Helium gas at 2 atm and `327^@C`. The flask is heated to `527^@C` at the same pressure. The fraction of original gas remaining in the flask is 

A

`3//4`

B

`1//4`

C

`1//2`

D

`2//5`

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The correct Answer is:
A
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AAKASH SERIES-STATES OF MATTER-OBJECTIVE EXERCISE -2
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