Following are a few definitions of osmosis. Read carefully and select the correct definition.
A
Movement of solvent molecules from a region of lower concentration to a region of higher concentration through a semipermeable membrane
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B
Movement of solvent molecules from its lower concentration to higher concentration through a permeable membrane
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C
Movement of solvent molecules from higher concentration to lower concentration of solution through a permeable membrane
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D
Movement of solute molecules from lower concentration to higher concentration of solution through a semipermeable membrane
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Solution
The correct option is A Movement of solvent molecules from a region of lower concentration to a region of higher concentration through a semipermeable membrane Osmosis is a phenomenon where pure water flows from a dilute solution through a semi-permeable membrane to a higher concentrated solution a region of lower concentration.
Semi-permeable means that the membrane will allow small molecules and ions to pass through it but acts as a barrier to larger molecules or dissolved substances.