The intermixing of particles of two different types of matter on their

The intermixing of particles of two different types of matter on their own is called

Osmosis

Brownian motion

Diffusion

Conductance

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UPSC NDA-2 – 2024

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The correct answer is C) Diffusion.

Diffusion is the net movement of anything generally from a region of higher concentration to a region of lower concentration. This movement is driven by the random motion of particles (molecules or atoms) leading to their spontaneous intermixing until the concentration is uniform throughout. The intermixing of particles of two different types of matter on their own is the definition of diffusion.

Osmosis is a specific type of diffusion involving the movement of solvent molecules (usually water) across a semipermeable membrane from a region of high solvent concentration to a region of low solvent concentration. Brownian motion is the random movement of microscopic particles suspended in a liquid or gas, caused by collisions with the molecules of the surrounding medium; it is the underlying cause of diffusion but not the intermixing process itself. Conductance refers to the ability of a material to conduct electricity.

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