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A gas occupied a volume of 50 ml at 700 ...

A gas occupied a volume of 50 ml at 700 mm Hg pressure atn `250^(@)C`. What additional pressure is required to reduce the gas volume to its 4/5 th value at the same temperature?

A

225mm Hg

B

175mmHg

C

150mmHg

D

265mmHg

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