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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. Nitrogen gas is evolved as a product of the reaction between benzenediazonium salt and ethanol.
2. Aryl fluoride can be obtained directly by heating which arenediazonium salt?
3. Which of the following cannot be formed from Sandmeyer reaction on benzenediazonium chloride?
4. Which of the following is not produced when C6H5N2+Br– is warmed with KI?
5. Alkyl fluorides and iodides cannot be formed from Sandmeyer reaction.
6. Which of the following pathways will result in the formation of benzene?
H3PO2 mild reducing agent reacts with benzenediazonium chloride to form benzene
7. The yield of chlorobenzene from Sandmeyer reaction is better than that from Gatterman reaction.
8. The coupling reaction is a type of _________ reaction.
9. In reactions of diazonium salts involving the displacement of diazonium group, the nitrogen escapes as _____
10. A diazonium salt ‘X’ forms sulphuric acid as one the by product when is reacts with phosphinic acid to give benzene. Identify ‘X’.
11. Which of the following is the most suitable reagent for converting benzenediazonium fluoroborate to nitrobenzene?
12. Which of the following can be produced by Gatterman reaction of diazonium salts?
13. Identify the most suitable reagent for converting benzene diazonium chloride to chlorobenzene.
14. When benzenediazonium chloride is treated with hypophosphorous acid, the product obtained is __________
15. Benzenediazonium bromide on Gatterman reaction with HCl does not form which of the following?
16. Which of the following is a by product of the reaction between fluoroborate diazonium salt and sodium nitrite in the presence of copper?
17. Which of the following is formed as a by product of decomposition of arenediazonium fluoroborate to give fluorobenzene?
18. Which of the following compounds has to be used in Gatterman reaction?
19. p-Aminophenol on coupling with benzenediazonium chloride in a basic medium gives 4-amino-3-phenylazophenol.
20. The reaction between benzenediazonium chloride and N,N-dimethylaniline, in an acidic medium at 273 K gives an orange coloured compound.
21. The reaction between a diazonium salt and aniline in a slightly acidic medium gives _______
22. What is the most suitable temperature for the conversion of benzenediazonium fluoroborate to nitrobenzene, with sodium nitrite and copper?
23. The complete reaction for the conversion of aniline to benzene, involving the reduction of diazonium salt, is known as _______
24. Identify ‘Y’ in the following reaction.
Benzenediazonium chloride reduced to benzene
25. What is the product of the following reaction?
The product of the reaction is 2-Amino-5-phenylazophenol occurs at para position

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