Amongst the compound given- the one that would form a brilliant coloured dye on treatment with NaNO 2 in dil-HCL followed by addition to an alkaline solution Of -naphthol is-A-B-CD-

The correct option is B It is a test for NH2 group attached on the benzene nucleus following diazotization and coupling reaction. ...

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Standard XII

Chemistry

Preparation of Alcohols from Grignard Reagents

Amongst the c...

Question

Amongst the compound given, the one that would form a brilliant coloured dye on treatment with NaNO₂ in dil.HCL followed by addition to an alkaline solution Of β-naphthol is:

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Solution

The correct option is C

It is a test for - NH₂ group attached on the benzene nucleus following diazotization and coupling reaction.

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Similar questions

Amongst the compound given, the one that would form a brilliant coloured dye on treatment with NaNO₂ in dil.HCL followed by addition to an alkaline solution Of β-naphthol is:

Q.
Statement I: Aniline on reaction with

N a N O_{2} / H C l

0^{o} C

followed by coupling with

β

-naphthol gives a dark blue coloured precipitate.
Statement II: The colour of the compound formed in the reaction of aniline with

N a N O_{2} / H C l

0^{o} C

followed by coupling with

β

-naphthol.

Q. Assertion :Aniline on reaction with

{N a N O}_{2} / H C l

0^{o} C

followed by coupling with

β

naphthol gives a dark blue coloured precipitate. Reason: The colour of the compound formed in the reaction of aniline with

{N a N O}_{2} / H C l

0^{o} C

followed by coupling with

β

naphthol is due to extended conjugation.

Q. Diazonium salt of which of the following will give coloured dye on reaction with

β - Naphthol

in acidic medium & NaOH:

Q. Ethanoic acid on heating with ammonia forms compound

A

which on treatment with bromine and sodium hydroxide gives compound

B

. Compound

B

on treatment with

N a N O_{2} / d i l . H C l

gives compound

C

. The compounds

A, B

and

C

respectively are:

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Amongst the compound given, the one that would form a brilliant coloured dye on treatment with NaNO2 in dil.HCL followed by addition to an alkaline solution Of β-naphthol is:

The correct option is C It is a test for - NH2 group attached on the benzene nucleus following diazotization and coupling reaction.

Amongst the compound given, the one that would form a brilliant coloured dye on treatment with NaNO₂ in dil.HCL followed by addition to an alkaline solution Of β-naphthol is:

The correct option is C

It is a test for - NH₂ group attached on the benzene nucleus following diazotization and coupling reaction.