Name the following by choosing the correct option:
The substance undergoing diffusion is:
[1 Mark]
A
Absorption of water by plant roots from the soil
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B
Swelling of raisins
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C
Swelling of wooden doors
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D
Opening of perfume bottle
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Solution
The correct option is D Opening of perfume bottle Diffusion is a process of movement of substances from a region of higher concentration to a region of lower concentration. A familiar example is the fragrance of a perfume that quickly fills the still air of a room.