JEE CHEMISTRY MCQ: ALCOHOLS & PHENOLS & ETHERS

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An unknown alcohol is treated with the Lucas reagent to determine whether the alcohol is primary, secondary or tertiary. Which alcohol reacts fastest by what mechanism 

View answer and explanation

Correct option: A

Tertiary alcohol by 

S{N^2}

Option C (Tertiary alcohol by

S{N^1}

) is correct because tertiary alcohols react fastest with Lucas reagent via an

S{N^1}

mechanism due to the stability of the tertiary carbocation intermediate.

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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

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

140^{\circ} \mathrm{C}

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