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JEE CHEMISTRY MCQ: ALCOHOLS & PHENOLS & ETHERS

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Which of the following reaction conditions are used for the conversion of ethanol to ethylene?

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Correct option: D

conc.

\mathrm{H}_2 \mathrm{SO}_4 / 170^{\circ} \mathrm{C}

Option D ( conc.

\mathrm{H}_2 \mathrm{SO}_4 / 170^{\circ} \mathrm{C}

) is correct because ethanol is converted to ethylene by dehydration using concentrated sulfuric acid at 170°C.

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Assertion (A): Isopropyl alcohol is preferred over ethanol.

Reason (R): Isopropyl alcohol is used as an antiseptic for skin before giving injections. Germinated Barley (an enzyme) is a source of enzyme: The process of converting alkyl halides into alcohols involves The b.p. of alcohols are….than corresponding thiols. Which of the following can not be used to oxidise primary alcohols to aldehydes Conc.

\mathrm{H}_2 \mathrm{SO}_4

heated with excess of

\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}

140^{\circ} \mathrm{C}