Asked in PPSC, FPSC and other one-paper exams (compiled from unofficial resources).

Physics in Everyday LifeHeat & Thermodynamics

By what mechanism does scent spread all over the room if the lid is opened?

A.Osmosis
B.DiffusionCorrect answer
C.Effusion
D.Convection

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Quick fact: Scent spreads throughout a room by diffusion, the movement of particles from a region of higher concentration to a region of lower concentration.

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By what mechanism does scent spread all over the room if the lid is opened?

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