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Organic Chemistry Questions and Answers – Benzene Diazonium Chloride – 1 | Organic Chemistry Multiple Choice Questions and Answers

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(1) What is the general formula of Diazonium salt?
[A] RN2+X–
[B] RN+
[C] RXI
[D] RN2+HSO–2
Answer: RN2+X–
(2) What is the known name of the given reaction?

C6H5N+2 + CuCl → C6H5Cl + N2 + Cu+

[A] Gattermanns reaction
[B] Sandmeyers reaction
[C] Dehydrogenation reaction
[D] Esterification reaction
Answer: Sandmeyers reaction

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(3) What is the known name of the given reaction?

C6H5N+2 + CuX → C6H5X + N2 + Cu+

[A] Gattermanns reaction
[B] Sandmeyers reaction
[C] Dehydrogenation reaction
[D] Esterification reaction
Answer: Gattermanns reaction
(4) What is the known name of the given reaction?

[C6H5N+2]Cl− + C6H6 → C6H5−C6H5 + N2 + HCl

[A] Gattermanns reaction
[B] Sandmeyers reaction
[C] Gomberg–Bachmann reaction
[D] Esterification reaction
Answer: Gomberg–Bachmann reaction
(5) What is the known name of the given reaction?

[C6H5N+2]BF−4 → C6H5F + BF3 + N2

[A] Gattermanns reaction
[B] Sandmeyers reaction
[C] Dehydrogenation reaction
[D] Balz-Schiemann reaction
Answer: Balz-Schiemann reaction
(6) What is the known name of the given reaction?

[C6H5N+2]Cl− + ArCH=CHCO2H → ArC=C−C6H5 + N2 + CO2 + HCl

[A] Gattermanns reaction
[B] Sandmeyers reaction
[C] Meerwein reaction
[D] Balz-Schiemann reaction
Answer: Gattermanns reaction
(7) Benzene diazonium chloride when reacts with hypophosphorus acid produces which of the following compound?
[A] Benzene
[B] Phenyl phosphate
[C] Phenol
[D] Phenyl isocyanide
Answer: Benzene
(8) p-amino azo benzene is obtained by treating diazonium chloride with which of the following compound?
[A] Benzene
[B] Aniline
[C] Phenol
[D] Benzoic acid
Answer: Aniline
(9) When hypophosphorous acid is treated with diazonium salts, it is reduced to which of the following compound?
[A] Arene
[B] Methane
[C] Ethyl alcohol
[D] Amines
Answer: Arene
(10) Which of the following amine will form stable diazonium salt at 273-283 K?
[A] C6H5NH2
[B] C6H5N(CH3)2
[C] C2H5NH2
[D] C6H5CH2NH2
Answer: C6H5NH2

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