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Class 12 Chemistry Practice Test: Diazonium Salts Chemical Reactions
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Class 12 Chemistry Practice Test: Diazonium Salts Chemical Reactions
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25 Questions

1. Warming an aqueous solution of benzenediazonium chloride gives phenol.
2. Benzenediazonium chloride on treatment with _____ gives a product which on heating forms fluorobenzene.
3. The reaction between benzenediazonium chloride and phenol results in a ______ coloured compound.
4. The reaction between benzenediazonium chloride and N,N-dimethylaniline, in an acidic medium at 273 K gives an orange coloured compound.
5. Which of the following pathways will result in the formation of benzene?
H3PO2 mild reducing agent reacts with benzenediazonium chloride to form benzene
6. Which of the following can be produced by Gatterman reaction of diazonium salts?
7. What is the product of the following reaction?
The product of the reaction is 2-Amino-5-phenylazophenol occurs at para position
8. Which of the following compounds has to be used in Gatterman reaction?
9. What is the most suitable pH of the medium for the conduction of coupling reaction of benzenediazonium chloride with phenol?
10. The reaction involving the conversion of diazonium salts to azo compounds is known as _______ reaction.
11. The reaction between a diazonium salt and aniline in a slightly acidic medium gives _______
12. Identify Y in the following reaction.
The Y in reaction CuCN/HCN when benzenediazonium chloride is treated with copper cyanide
13. When a diazonium salt is treated with ______ iodobenzene is formed.
14. Identify ‘Y’ in the following reaction.
Benzenediazonium chloride reduced to benzene
15. Which of the following is formed as a by product of decomposition of arenediazonium fluoroborate to give fluorobenzene?
16. When a diazonium salt is treated with p-cresol, at which position with respect to the hydroxy group does the coupling occur?
17. What is the most suitable temperature for the conversion of benzenediazonium fluoroborate to nitrobenzene, with sodium nitrite and copper?
18. p-Aminophenol on coupling with benzenediazonium chloride in a basic medium gives 4-amino-3-phenylazophenol.
19. The coupling reaction of benzenediazonium chloride with aniline occurs in a ______ medium.
20. Which of the following is the most suitable reagent for converting benzenediazonium fluoroborate to nitrobenzene?
21. Nitrogen gas is evolved as a product of the reaction between benzenediazonium salt and ethanol.
22. In reactions of diazonium salts involving the displacement of diazonium group, the nitrogen escapes as _____
23. The yield of chlorobenzene from Sandmeyer reaction is better than that from Gatterman reaction.
24. Which of the following is not obtained as a product of the reaction between benzenediazonium bromide and ethanol?
25. Benzenediazonium bromide on Gatterman reaction with HCl does not form which of the following?

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