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Standard XII

Chemistry

Elimination Reactions of Alkyl Halides

Amongst the c...

Question

Amongst the compounds given, the one that would form a brilliant coloured dye on treatment with $N a N O_{2}$ in dilute $H C l$ followed by addition to an alkaline solution of $β -$ naphthol is:

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Solution

The correct option is C

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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. An aqueous solution of inorganic compound

(X)

gives the following reactions.

(i) with an aqueous solution of

B a C l_{2}

a precipitate insoluble in dilute

H C l

is obtained.
(ii) addition of an excess of

K I

gives a brown appearance that turns white on the addition of an excess of hypo.
(iii) with an aqueous solution of

K_{4} F e (C N)_{6}

a chocolate coloured precipitate is obtained.

Identify

(X)

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

β - Naphthol

in acidic medium & NaOH:

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Amongst the compounds given, the one that would form a brilliant coloured dye on treatment with NaNO2 in dilute HCl followed by addition to an alkaline solution of β−naphthol is:

The correct option is C

Amongst the compounds given, the one that would form a brilliant coloured dye on treatment with $N a N O_{2}$ in dilute $H C l$ followed by addition to an alkaline solution of $β -$ naphthol is: