Organic Chemistry Multiple Choice Questions and Answers

(1) Replacement of diazo group by other groups is helpful in preparing those substituted aromatic compounds which cannot be prepared which type of reaction?

[A] Direct elimination

[B] Addition reaction

[C] Direct substitution

[D] Replacement reaction

Answer: Direct substitution

(2) What happens when benzene diazonium chloride is treated with potassium cyanide in presence of Cu powder?

[A] Benzophenone

[B] Methyl isocyanide

[C] Acetonitrile

[D] Benzonitrile

Answer: Benzonitrile

(3) By treating diazonium salts with cuprous cyanide or KCN and copper powder it forms which of the following compound?

[A] Citric acid

[B] Benzoic acid

[C] Aryl nitrile

[D] Oxalic acid

Answer: Aryl nitrile

(4) Benzene diazonium chloride forms orange red dye with which of the following compound?

[A] Nitrophenol

[B] Benzophenol

[C] Resorcinol

[D] Methanol

Answer: Resorcinol

(5) Which of the following is compound A for following sequence of reaction gave benzoic acid benzoic acid?

[A] Nitrobenzene

[B] Aniline

[C] Benzaldehyde

[D] Amides

Answer: Aniline

(6) In the series of reaction, what are X and Y are respectively?

[A] C₆H₅−N=N−C₆H₅, C₆H₅N⁺₂Cl^–

[B] C₆H₅N+2Cl^–, C₆H₅−N=N−C₆H₅

[C] C₆H₅N+2Cl^–, C₆H₅NO₂

[D] C₆H₅NO₂, C₆H₆

Answer: C₆H₅N+2Cl^–, C₆H₅NO₂

(7) Aniline in a set of reactions yielded a product D. The structure of product D would be

[A] C₆H₅CH₂NH₂

[B] C₆H₅NHCH₂CH₃

[C] C₆H₅NHOH

[D] C₆H₅CH₂OH

Answer: C₆H₅CH₂OH

(8) Azo dye is prepared by the coupling of phenol and which of the following compound?

[A] Diazonium chloride

[B] o-nitro aniline

[C] Benzoic acid

[D] Chlorobenzene

Answer: Diazonium chloride

(9) Identify the product in following order when 3,4,5-Tribromoaniline undergoes diazotisation followed by attack of H₃PO₂?

[A] 3, 4,5-Tribromobenzene

[B] 1, 2, 3-Tribromobenzene

[C] 2, 4, 6-Tribromobenzene

[D] 3, 4, 5-Tribromo nitro benzene

Answer: 3, 4,5-Tribromobenzene

(10) When diazonium salt solution is treated with KI, it forms which of the following compound?

[A] Bromobenzene

[B] Iodobenzene

[C] Phenol

[D] Acid

Answer: Iodobenzene

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Organic Chemistry Questions and Answers – Benzene Diazonium Chloride – 2 | Organic Chemistry Multiple Choice Questions and Answers

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