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Spreading of smell in a room is an example of which phenomenon?

Answer and explanation

Correct answer: Diffusion

Odour particles move spontaneously from a region of higher concentration to regions of lower concentration. This process is called diffusion, so diffusion is the correct answer. Sublimation is the direct change of a solid into a gas, whereas here gaseous odour particles are already spreading through the room. Exam tip: Diffusion is fastest in gases because their particles move more freely.

Related tags

DiffusionParticle MotionGasesConcentration GradientNature Of MatterSome Basic Concepts Of ChemistryChemistryClass 11 Mcq

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