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  • Which of the following statements does not apply to reverse osmosis? (a) It is used for water purification.(b) In this technique, pressure greater than osmotic pressure is applied to the system.(c) It is a passive process.(d) It is an active process.

Which of the following statements does not apply to reverse osmosis?
(a) It is used for water purification.
(b) In this technique, pressure greater than osmotic pressure is applied to the system.
(c) It is a passive process.
(d) It is an active process.

Answers (1)

Reverse osmosis is known as the process which facilitates the passing of a solvent across a porous or semipermeable membrane, opposite to the direction of the usual process of osmosis. In normal osmosis, the hydrostatic pressure is larger in comparison to the osmotic pressure. Given that reverse osmosis is the opposite, it is not an active process. The answer is the option (d).

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