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Q56
(NDA-II/2024)
Science & Technology › Basic Science (Physics, Chemistry, Biology)
Official Key
The intermixing of particles of two different types of matter on their own is called
Result
Your answer:
—
·
Correct:
C
Explanation
Diffusion is defined as the spontaneous intermixing of particles of two different types of matter on their own. This phenomenon occurs because particles of matter are in continuous motion and possess kinetic energy, allowing them to occupy the spaces between particles of another substance.
- Why Option C is correct: Diffusion happens without external force, moving particles from an area of higher concentration to an area of lower concentration. The rate of diffusion increases with temperature as particles gain more kinetic energy. A classic example is the aroma of food or perfume spreading through the air.
- Distinction from other terms:
- Osmosis: A specific type of diffusion involving the movement of solvent molecules through a semi-permeable membrane.
- Brownian motion: The random, zig-zag movement of microscopic particles suspended in a liquid or gas.
- Conductance: The property of a material to allow the flow of heat or electricity.
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