NEET UG CHEMISTRY MCQ: ALCOHOLS & PHENOLS & ETHERS

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Analyzing +4 | -1

An unknown compound dissolves in

{H}_2 {SO}_4

, but does not decolourise

{Br}_2

water and does not react with

{Na}

. Which of the following classes of molecules would behave in this manner?

View answer and explanation

Correct option: D

Ether

Option D (Ether) is correct because ethers dissolve in strong acids like

H_2SO_4

due to protonation of the oxygen atom, but they don't react with

Br_2

water (unlike alkenes/phenols) or Na (unlike alcohols/phenols).

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{\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}}

\mathrm{O}_2

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