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The semi permeable membranes used in the reverse osmosis is _________

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The semi permeable membranes used in the reverse osmosis is _________

(a) Cellulose

(b) Glucose

(c) Cellulose acetate

(d) Glucose acetate

This question was posed to me in an online interview.

My question comes from Reverse Osmosis, Ultrafilteration, COD and BOD topic in chapter Water of Applied Chemistry

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Correct answer is (c) Cellulose acetate

For explanation I would say: The semi permeable membrane used in reverse osmosis is cellulose acetate and cellulose butyrate etc.

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