NEET UG CHEMISTRY MCQ: ALCOHOLS & PHENOLS & ETHERS

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Choose the correct acidity order of the following phenols

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Correct option: C

O - Nitro phenol > P - chloro phenol > Phenol > O - cresol

Option C (O - Nitro phenol > P - chloro phenol > Phenol > O - cresol) is correct because the acidity of phenols is affected by the substituents. Electron-withdrawing groups increase acidity, while electron-donating groups decrease acidity. Ortho-nitrophenol is more acidic than para-nitrophenol due to intramolecular hydrogen bonding making it easier to lose a proton.

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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: