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Diazonium Salts, Class 12 Chemistry NCERT Solutions

1. There will be total 20 MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying.

1. Benzene diazonium chloride when reacts with hypophosphorus acid produces
 
 
 
 

Question 1 of 20

2. p-amino azo benzene is obtained by treating diazoniumchloride with:
 
 
 
 

Question 2 of 20

3. When hypophosphorous acid is treated with diazonium salts, it is reduced to:
 
 
 
 

Question 3 of 20

4. Which of the following amine will form stable diazonium salt at 273-283 K ?
 
 
 
 

Question 4 of 20

5. Replacement of diazo group by other groups is helpful in preparing those substituted aromatic compounds which cannot be prepared by:
 
 
 
 

Question 5 of 20

6. ArN2+Cl– 1 ArX + N2 is called as:
 
 
 
 

Question 6 of 20

7. Which of the following amine gives diazonium salt on reaction with HNO2?
 
 
 
 

Question 7 of 20

8. An azo compound is formed when benzene diazonium chloride reacts with:
 
 
 
 

Question 8 of 20

9. What happens when benzene diazonium chloride is treated with potassium cyanide in presence of Cu powder?
 
 
 
 

Question 9 of 20

10. When ethanol is treated with benzene diazoniumchloride it forms:
 
 
 
 

Question 10 of 20

11. The conversion of primary aromatic amines into diazonium salts is known as:
 
 
 
 

Question 11 of 20

12. By treating diazonium salts with cuprous cyanide or KCN and copper powder it forms:
 
 
 
 

Question 12 of 20

13. Benzene diazonium chloride forms orange red dye with:
 
 
 
 

Question 13 of 20

14. The stability of benzene diazonium salts is because of
 
 
 
 

Question 14 of 20

15. Azo-dye test is given by:
 
 
 
 

Question 15 of 20

16. The general formula of Diazonium salt is:
 
 
 
 

Question 16 of 20

17. When diazonium salt solution is treated with KI, it forms:
 
 
 
 

Question 17 of 20

18. Diazo coupling is useful to prepare:
 
 
 
 

Question 18 of 20

19. Benzene diazonium chloride on reaction with phenol in weakly basic medium gives:
 
 
 
 

Question 19 of 20

20. When diazonium salt solution is treated with water at a temperature of 283 K it forms?
 
 
 
 

Question 20 of 20