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AIIMS 2005
Exam
AIIMS
Year
2005
Subject
Chemistry
Chapter
States of Matter

AIIMS 2005 · Chemistry · States of Matter

Assertion : Compressibility factor for hydrogen varies with...

Assertion : Compressibility factor for hydrogen varies with pressure with positive slope at all pressures. Reason : Even at low pressures, repulsive forces dominate hydrogen gas.

Options

  1. AIf both assertion and reason are true and reason is the correct explanation of assertion
  2. BIf both assertion and reason are true but reason is not the correct explanation of assertion
  3. CIf assertion is true but reason is false
  4. DIf both assertion and reason are false.

Correct answer

A. If both assertion and reason are true and reason is the correct explanation of assertion

Step-by-step solution

In case of H2\mathrm{H}_2, compressibility factor increases with the pressure. At 273 K,Z>1273 \mathrm{~K}, Z>1 which shows that it is difficult to compress the gas as compared to ideal gas. In this case repulsive forces dominate.
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