Haloalkanes and Haloarenes
7 Board Chemistry previous year questions on Haloalkanes and Haloarenes — options free on every question; 1 include the answer & explanation free, the rest unlock with PYQ Pass.
The products A and B in the following reactions, respectively are
\(A\overset{Ag-N{O}_{2}}{←}C{H}_{3}-C{H}_{2}-C{H}_{2}-Br\overset{AgCN}{\to }B\)
[JEE Main 2025, 28 Jan (Shift 1)]
\(C{H}_{3}-C{H}_{2}-C{H}_{2}-N{O}_{2},C{H}_{3}-C{H}_{2}-C{H}_{2}-NC\)
AgCN is covalent compound and \(AgN{O}_{2}\) is ionic compound.
A is \(C{H}_{3}-C{H}_{2}-C{H}_{2}-N{O}_{2},B\) is \(C{H}_{3}-C{H}_{2}-C{H}_{2}-NC\).
The correct statement regarding nucleophilic substitution reaction in a chiral alkyl halide is ;
[JEE Main 2024, 27 Jan (Shift 1)]
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Identify correct statement/s :
(A) \(-OC{H}_{3}\) and \(-NHCOC{H}_{3}\) are activating group.
(B) - CN and - OH are meta directing group.
(C) - CN and \(-S{O}_{3}H\) are meta directing group.
(D) Activating groups act as ortho - and para directing groups.
(E) Halides are activating groups.
Choose the correct answer from the options given below :
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The products A and B in the following reactions, respectively
\((\mathrm{A})\overset{{\mathrm{AgNO}}_{2}}{←}{\mathrm{CH}}_{3}{\mathrm{CH}}_{2}{\mathrm{CH}}_{2}\mathrm{Br}\overset{\mathrm{AgCN}}{\to }(\mathrm{B})\)
(Memory-based Question 28/ Jan/25 morning shift )
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Given below are two statements:
Statement I: The conversion proceeds well in the less polar medium.
\(C{H}_{3}-C{H}_{2}-C{H}_{2}-C{H}_{2}-Cl\overset{{}^{H{O}^{-}}}{\to }C{H}_{3}-C{H}_{2}-C{H}_{2}-C{H}_{2}-OH+C{l}^{(-)}\)
Statement II: The conversion proceeds well in the more polar medium.
\(C{H}_{3}-C{H}_{2}-C{H}_{2}-C{H}_{2}-Cl\overset{{R}_{3}\overset{..}{N}}{\to }C{H}_{3}-C{H}_{2}-C{H}_{2}-C{H}_{2}-\overset{\overset{R}{|}}{\underset{\underset{R}{|(+)}}{N}}-RC{l}^{(-)}\)
In the light of the above statements, choose the correct answer from the options given below:
[JEE Main 2025, 24 Jan (Shift 1)]
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The major product \(C\) in the below mentioned reaction is :
\(C{H}_{3}C{H}_{2}C{H}_{2}Br\overset{Alc.KOH}{\underset{\Delta }{\to }}A\overset{HBr}{\to }B\overset{\text{Aq }KOH}{\underset{∆}{\to }}C\)
[Re-NEET 2024]
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Which of the following alkyl halides is hydrolysed by \({{S}_{N}}^{I}\) mechanism?
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