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Question

Which among the following is involved in the process of diffusion?

A
Movement of molecules from higher to lower concentration.
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B
Movement of molecules from lower to higher concentration.
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C
Movement of molecules with the expenditure of energy.
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D
Movement of molecules without the expenditure of energy.
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Solution

The correct options are
A Movement of molecules from higher to lower concentration.
D Movement of molecules without the expenditure of energy.
Diffusion is the process of movement of molecules from a region of higher concentration to a region of lower concentration.
It occurs without the expenditure of energy, and hence can be called as a passive process.

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