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Compounds Containing Nitrogen question

2023 · 29 Jan · Shift 1 · Q8
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  5. /2023 · 29 Jan · Shift 1 · Q8

Compounds Containing Nitrogen question

2023 · 29 Jan · Shift 1 · Q8

JEE MainChemistryCompounds Containing NitrogenMCQ+4 / −1

Match List I with List II

List I List II
Reaction Reagents
(A) Hoffmann Degradation (I) Conc.KOH\mathrm{Conc. KOH}Conc.KOH, Δ\DeltaΔ
(B) Clemenson reduction (II) CHCl3,NaOH/H3O⊕\mathrm{CHCl_3,NaOH/H_3O}^ \oplusCHCl3​,NaOH/H3​O⊕
(C) Cannizaro reaction (III) Br2,NaOH\mathrm{Br_2,NaOH}Br2​,NaOH
(D) Reimer-Tiemann Reaction (IV) Zn−Hg/HCl\mathrm{Zn-Hg/HCl}Zn−Hg/HCl

Choose the correct answer from the options given below :

  1. A
    (A) - III, (B) - IV, (C) - I, (D) - II
  2. B
    (A) - II, (B) - IV, (C) - I, (D) - III
  3. C
    (A) - III, (B) - IV, (C) - II, (D) - I
  4. D
    (A) - II, (B) - I, (C) - III, (D) - IV
View written solutionFree

Correct answer: A

  1. We match each named reaction with its characteristic reagent set.

  2. (A) Hoffmann degradation

    Hoffmann bromamide degradation converts an amide to an amine with one less carbon using: Br2+NaOH\mathrm{Br_2 + NaOH}Br2​+NaOH So, (A)→(III)\text{(A)} \rightarrow \text{(III)}(A)→(III)

  3. (B) Clemmensen reduction

    Clemmensen reduction reduces carbonyl compounds to hydrocarbons using: Zn−Hg/HCl\mathrm{Zn-Hg/HCl}Zn−Hg/HCl So, (B)→(IV)\text{(B)} \rightarrow \text{(IV)}(B)→(IV)

  4. (C) Cannizzaro reaction

    Cannizzaro reaction occurs with aldehydes lacking α\alphaα-hydrogen in presence of concentrated alkali: Conc. KOH, Δ\mathrm{Conc.\ KOH},\ \DeltaConc. KOH, Δ So, (C)→(I)\text{(C)} \rightarrow \text{(I)}(C)→(I)

  5. (D) Reimer-Tiemann reaction

    Reimer-Tiemann reaction uses chloroform and aqueous alkali followed by hydrolysis: CHCl3, NaOH/H3O+\mathrm{CHCl_3,\ NaOH/H_3O^+}CHCl3​, NaOH/H3​O+ So, (D)→(II)\text{(D)} \rightarrow \text{(II)}(D)→(II)

  6. Therefore the full matching is: (A)-III, (B)-IV, (C)-I, (D)-II\text{(A)-III, (B)-IV, (C)-I, (D)-II}(A)-III, (B)-IV, (C)-I, (D)-II

  7. Comparing with options, this is Option A.

  8. Comparison with stored answer: Stored correct answer is A, which matches our derived answer.

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