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Railways PYQCBT 1 2016

RRB NTPC · Question 38

Which process is used in water purification? A. Osmosis B. Reverse Osmosis C. Cytolysis D. Turgor pressure

  1. C

  2. B

  3. D

  4. A

Show answer & explanation

Answer: (B) B

Explanation

Reverse osmosis pushes water through a semi-permeable membrane against the concentration gradient, leaving salts and impurities behind; it is widely used to purify drinking water.