• question_answer Gases deviate from the ideal gas behaviour because their molecules      [NCERT 1981] A)                 Possess negligible volume B)                 Have forces of attraction between them C)                 Are polyatomic D)                 Are not attracted to one another

Solution :

Because molecules of real gases have intermolecular forces of attraction so the effective impact on the wall of container is diminished. Pressure of real gas is reduced by $\frac{a}{{{v}^{2}}}$ factor hence behaviour of real gas deviate from ideal behaviour.

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