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Azo dye is prepared by the coupling of p...

Azo dye is prepared by the coupling of phenol and:

A

diazonium chloride

B

o - nitroaniline

C

benzoic acid

D

chlorobenzene

Text Solution

Verified by Experts

The correct Answer is:
A
Azo dye is prepared by diazo coupling reaction of phenol with diazonium salt.

`(-N=N-)` group is called azo group.
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DISHA PUBLICATION-AMINES-Exercise - 1 : Concept Builder (Topicwise)(TOPIC - 1 : Amines and Amides)
  1. How many primary amines are possible for the formula C4 H(11) N

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  2. The conversion of acetophenone to acetanilide is best accompanied by u...

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  3. Azo dye is prepared by the coupling of phenol and:

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  4. Aniline when treated with conc. HNO3 gives

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  5. Among the following the strongest base is

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  6. C(7)H(9)N has how many isomeric forms that contain a benzene ring?

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  7. Treatment of ammonia with excess of ethyl iodide will yield

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  8. Which of the following gives primary amine on reduction?

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  9. Which of the following reaction will not give primary amine ?

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  10. Which is formed when (CH(3))(4)NOH is heated ?

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  11. The correct order of increasing basicity in aqueous solution is

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  12. CH(3)CH(2)Cloverset(NaCN)rarrXoverset(Ni//H(2))rarrYunderset("anhydrid...

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  13. In the diazotisation of anline with sodium nitrite and hydrochloride a...

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  14. Aniline reacts with excess of phosgene and KOH to form :

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  15. Primary amines on heating with "CS"(2) followed by excess of mercuric ...

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  16. When benzene diazonium chloride is treated with cuprous chloride in H...

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  17. The indicator that is obtained by coupling the diazonium salt of sulph...

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  18. In a reaction of aniline a coloured product C was obtained. The s...

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  19. The alkene formed as a major product in the above elimination reaction...

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  20. Predict about the relative boiling point of the following two amines.

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