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How is industrial isopropanol manufactured?

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How is industrial isopropanol manufactured?

(a) Hydration of propylene

(b) Fermentation of molasses

(c) Contact process

(d) Linde’s process

I got this question in an internship interview.

My query is from C3 Compounds in portion Synthetic Organic Chemical Industries of Chemical Technology

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Correct choice is (a) Hydration of propylene

Explanation: Isopropanol is manufactured by the hydrolysis of propylene. Propylene is absorbed in a tray tower filled with sulfuric acid to produce isopropyl acid sulphate. Ethanol is manufactured by fermentation of molasses. Oxygen is manufactured by Linde’s process whereas sulfuric acid is manufactured by contact process.

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