Ethylene glycol when heated in the presence of an hydrous `ZnCl_(2)` yields

Ethylene glycol when heated in the presence of an hydrous `ZnCl_(2)` yields
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Ethylene glycol when heated in the presence of an hydrous `ZnCl_(2)` yields A. Ethanal B. Ethylene oxide C. Dioxane D. Diethylene glycol
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