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Railways PYQCBT 2 2017

RRB NTPC · Question 50

Which of the following is used in water purification?

  1. Turgor pressure

  2. Osmosis

  3. Reverse Osmosis

  4. Cytolysis

Show answer & explanation

Answer: (C) Reverse Osmosis

Explanation

Reverse osmosis forces water through a semi-permeable membrane against the osmotic gradient, leaving dissolved salts and impurities behind.