NEET UG CHEMISTRY MCQ: ALCOHOLS & PHENOLS & ETHERS

1 Hard

1 of 1

Application +4 | -1

Which of the following reagents can be used for preparation of cumene?

(i)

{C}_6 {H}_6, {Cl}_2

, hv; Mg.THF; acetone.

(ii)

{C}_6 {H}_6, {CH}_3 {CH}_2 {CH}_2 {Cl}, {AlCl}_3

.

(iii)

{C}_6 {H}_6, {CH}_3 {CHClCH}_3, {AlCl}_3

.

(iv)

{C}_6 {H}_6, {CH}_3 {CH}_2 {Cl}, {AlCl}_3

;

View answer and explanation

Correct option: B

(ii) and (iii)

Option B ((ii) and (iii)) is correct because cumene (isopropylbenzene) can be prepared by Friedel-Crafts alkylation of benzene with either 1-chloropropane or 2-chloropropane in the presence of AlCl3.

More Questions from ALCOHOLS & PHENOLS & ETHERS

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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: