JEE CHEMISTRY MCQ: ALCOHOLS & PHENOLS & ETHERS

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Analyzing +4 | -1

What is Z in the following sequence of reactions?

Z\xrightarrow{{PC{l_5}}}X\xrightarrow{{Alc.KOH}}Y\xrightarrow[{(ii)\,{H_2}O\,;\,\,boil}]{{(i)\,\,Conc.\,{H_2}S{O_4}}}Z

View answer and explanation

Correct option: B

C{H_3}CH(OH)C{H_3}

The correct answer is B (

C{H_3}CH(OH)C{H_3}

) because the sequence of reactions (treatment with PCl5, alcoholic KOH, and then concentrated H2SO4 followed by water and boiling) leads to the regeneration of the original alcohol.

More Questions from ALCOHOLS & PHENOLS & ETHERS

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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}

to form