Reverse osmosis refers to

Separation process that uses pressure to force a solvent through a semi-permeable membrane, that retains the solute on one side and allows the pure solvent to pass to the other side.

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Separation process that uses pressure to force a solvent through a semi-permeable membrane that retains the solute on one side and allows the impure solvent to pass to the other side.

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Separation process that uses pressure to force a solvent through a permeable membrane that retains the solute on one side and allows the pure solvent to pass to the other side.

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None of the above

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Solution

The correct option is A Separation process that uses pressure to force a solvent through a semi-permeable membrane, that retains the solute on one side and allows the pure solvent to pass to the other side.
In natural osmosis, solvent particles move from lesser concentrated solution to more concentrated solution.
But, in the case of Reverse osmosis, external pressure is applied (which is greater than the natural osmotic pressure of solvent molecules) which forces the solvent particles to move from the higher concentrated solution to a lower concentrated solution.
Hence retaining the solute on one side and allowing the pure solvent to pass to the other side.
Hence, the correct option is A.

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Similar questions

Q. Which of the following process forces pure solvent to pass through a semi-permeable membrane from the higher concentration of solute to the lower concentration of solute?

The most appropriate characteristic of a semi-permeable membrane is that

(a) it has minute pores.
(b) it has no pores.

(d) it allows a solvent to pass through freely but prevents the passage of the solute.

The process of movement of solvent through a semipermeable membrane from the solution to the pure solvent by applying excess pressure on the solution side is called

Q. Read the given statements and select the correct ones.
(i) A membrane which permits the passage of pure solvent molecules to pass through it and not the solute particles is called semi-permeable.
(ii) A membrane which allows some substances to pass through it more readily than others is known as selectively/differentially permeable.
(iii) All living biological membranes are perfectly semipermeable.

Q. A perfectly semi-permeable membrane when used to separate a solution from its solvent permits through it the passage of :

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