Diffusion is the movement of particles from a region of concentration to the region of concentration.

higher

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lower

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constant

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same

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Solution

The correct option is B lower
The process of diffusion includes the movement of particles (substances) from the region of higher to the region of lower concentration till concentration on both sides become equal.
The same process is responsible for the gaseous exchange that takes place betweeen the blood and the air in the alveoli.

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Similar questions

Q. Diffusion is the movement of particles from the area of high concentration to low concentration.

Q. is the net movement of particles from a region of high concentration to one of low concentration.

Q. Diffusion occurs from a region of lower concentration to higher concentration.

Movement of molecules of a substance from the region of their higher concentration to the region of their lower concentration without the involvement of a separating membrane is called

(a) Osmosis (b) Diffusion

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is the net movement of molecules from a region of high concentration to a region of low concentration.

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