NEET UG CHEMISTRY MCQ: ALCOHOLS & PHENOLS & ETHERS

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The ease of dehydrohalogenation of alkyl halide with alcoholic KOH is

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Correct option: B

{3^ \circ } > {2^ \circ } > {1^ \circ }

Option B (

{3^ \circ } > {2^ \circ } > {1^ \circ }

) is correct because the stability of the alkene formed during dehydrohalogenation increases with the degree of substitution.

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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}