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How is chlorine gas manufactured industrially?

(a) Deacon process

(b) Ostwald process

(c) Chlor-alkali process

(d) Haber process

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I need to ask this question from P-Block Elements in chapter P-Block Elements of Chemistry – Class 12

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Correct choice is (c) Chlor-alkali process

Easiest explanation: Although Deacon process involves release of chlorine gas as a byproduct, the chief purpose of the deacon process is used to manufacture alkalis. Chlorine is best produced by the chloralkali process, which is the electrolysis of brine, producing hydrogen and chlorine gases as by products.

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