States of Matter — Hard / Advanced (NEET-Level Challenging)

Practice 100 questions on States of Matter — Hard / Advanced (NEET-Level Challenging). Includes: Assertion (A): H₂ and He show Z > 1 at all pressures.…; Assertion (A): Real gases behave ideally at low…; Which expression gives the density of an ideal gas?. Free quiz on NoteTube.

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1.
Assertion (A): Viscosity of gases increases with temperature. Reason (R): At higher temperature, intermolecular forces in gases weaken, reducing viscosity.
2.
Assertion (A): At the critical point, the density of liquid and vapour become equal. Reason (R): At the critical point, the meniscus between liquid and vapour disappears.
3.
Assertion (A): At the Boyle temperature, a real gas behaves ideally over a wide pressure range. Reason (R): At T_B, the compressibility factor Z = 1 at all pressures.
4.
Assertion (A): Surface tension of a liquid decreases with temperature. Reason (R): At higher temperatures, molecules at the surface have higher kinetic energy, weakening cohesive intermolecular forces.
5.
Which expression gives the density of an ideal gas?

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