Which of following statements does not apply to reverse osmosis?

Options

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.

Answer

C

Explanation

Reverse osmosis is also known as hyperfiltration. It is a technique that allows the removal of water molecules from various contaminants through a semi-permeable membrane. The process requires a driving force, viz, presssure from a pump, to push the fluid through the membrane. Reverse osmosis is used in removing salts from saline water and extra purification of water.