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Last updated date: 27th Nov 2023
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MVSAT Dec 2023

Diffusion is the process of
(a) Refraction of particle
(b) Movement of particles through a semipermeable membrane.
(c) Movement of particles from higher concentration to lower concentration.
(d) Accumulation of particles on a solid surface.

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Hint: Diffusion is an essential phenomenon that occurs in a variety of life processes. It is, as previously said, the net movement of particles, ions, molecules, solutions, and so on. Diffusion is an essential factor in the movement of molecules during the metabolic process of all living organisms.

Complete answer:
The most direct form of membrane transport is passive membrane transport. Passive transport is a naturally occurring mechanism in which a cell travels without exerting any energy. In passive transport, diffusion is the process by which substances move from a higher concentration area to a lower concentration area. A concentration gradient is a physical space that contains various concentrations of a single substance.
Diffusion is a passive mode of transport. Until the concentration is uniform throughout the space, a single material appears to move from a high-concentration area to a low-concentration area. Diffusion would not necessitate the use of electricity. Diffusion is the dissipation of potential energy as materials migrate down concentration gradients from high to low concentration.
As a result of the above data, it can be concluded that diffusion is described as the movement of particles from a higher concentration to a lower concentration.
So, the correct option is (c).

Note: The essence of the interaction between the medium and the substance determines the rate of diffusion. A gas, for example, diffuses rapidly in another gas. The way ammonia gas's noxious odors travel through the air is an example of this. Similarly, if a canister of liquid nitrogen spills a small amount, the nitrogen gas will easily diffuse into the atmosphere. In a liquid, such as water, the same gas diffuses slightly more slowly, and in a solid, it diffuses the slowest.