ethylene glycol on being distilled with concentrated H2SO4 gives

1. ethylene oxide

2. acetaldehyde

3. 1,4-dioxane

4. diethylene glycol

Dear Aditya,

When distilled with conc. sulphuric acid ethylene glycol undergoes dehydration to form 1,4-dioxane ( six membered ring with two oxygen atoms diagonally opposite); H from OH of one molecule reacts with OH of another moleccule, similarly OH of first molecule reacts with H of second molecule.

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the correct ans is 2.

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