NEET UG CHEMISTRY MCQ: ALCOHOLS & PHENOLS & ETHERS

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Assertion (A): Phenoxide ion is more stable than carboxylate ion.
Reason (R): The –ve charge is delocalized over two electronegative atoms in carboxylate ion.

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Correct option: B

Both A & R are correct and not correct explanation

Option B (Both A & R are correct and not correct explanation) is correct because while both the assertion and the reason are true, the reason does not fully explain why the phenoxide ion is more stable.

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Ethers are made free from peroxide linkage on distilling impure sample with: The product 'B' in the following reaction is

{\text{C}}{{\text{H}}_3}{\text{C}}{{\text{H}}_2}{\text{OH}}\xrightarrow{{{\text{PCC}}}}{\text{A}}\xrightarrow[{\left( {{\text{ii}}} \right){\text{ }}{{\text{H}}_2}{\text{O/}}{{\text{H}}^ + }}]{{\left( {\text{i}} \right){\text{ HCN}}}}{\text{B}}

Fenton’s reagent is: Assertion:- Isopropyl benzene reacts with

\mathrm{O}_2

and acid gives phenol.

Reason:- Initially isopropyl benzene converts into 2-phenyl propan-2-ol. When an ether is treated with

{\mathrm{P}_2}{\mathrm{S}_5}

we get: Physical properties of: