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Why is diffusion in liquids slower than in gases?

Answer and explanation

Correct answer: Liquid particles are closer together than gas particles

The governing concept is the particle theory of matter. Diffusion occurs because particles move randomly and intermingle from a region of higher concentration toward a region of lower concentration. In gases, particles are widely separated, experience relatively weak intermolecular attraction, and move rapidly, so they spread quickly. In liquids, particles are much closer together and interact more strongly; their movement is possible but less free, so intermixing takes longer. Therefore option A gives the correct reason. Options B, C, and D are scientifically false: liquids contain particles, are not always solids, and may be metallic or non-metallic.

Related tags

Particle TheoryDiffusionStates Of MatterNature Of MatterSome Basic Concepts Of ChemistryChemistryClass 11 Mcq

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