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NEET UG CHEMISTRY MCQ: ALCOHOLS & PHENOLS & ETHERS

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Application +4 | -1
To prepare 3-ethylpentane-3-ol, the reactants needed are:
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Correct option: C
CH3CH2MgBr+CH3CH2COCH2CH3\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{MgBr}+\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{COCH}_2 \mathrm{CH}_3
Option C is correct because the reaction of ethyl magnesium bromide with 3-pentanone will produce 3-ethylpentan-3-ol after hydrolysis.

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Ethers are made free from peroxide linkage on distilling impure sample with: The product 'B' in the following reaction is
CH3CH2OH→PCCA→(ii) H2O/H+(i) HCNB{\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 O2\mathrm{O}_2 and acid gives phenol.

Reason:- Initially isopropyl benzene converts into 2-phenyl propan-2-ol. When an ether is treated with P2S5{\mathrm{P}_2}{\mathrm{S}_5} we get: Physical properties of:
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