JEE CHEMISTRY MCQ: ALCOHOLS & PHENOLS & ETHERS

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Analyzing +4 | -1

3-methyl-2-butanol on treatment with HCl gives predominantly:

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Correct option: A

2-chloro-2-methylbutane

Option A (2-chloro-2-methylbutane) is correct because the reaction proceeds via a carbocation rearrangement to form a more stable tertiary carbocation, which then reacts with chloride ion.

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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