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Following is a confirmatory test for aromatic primary amines. Identify reagent (A) and (B)

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Important Questions on Amines

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Consider the following reaction:
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The product 'X' is used:

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In the reaction,

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The product E is
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In the following reaction, the product (A)
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Reaction of aniline with NaNO2+ dil. HCl at 0o C followed by reaction with CuCN yields
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Which of the following is a Gattermann reaction?
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Benzene diazonium chloride on reaction with aniline in the presence of dilute hydrochloric acid gives:
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C6H5N2Cl in presence of KCN and CuCN gives an organic compound, which on acid hydrolysis gives ' X ' The compound ' X ' may be
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For the identification of β -naphthol using dye test, it is necessary to use
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The major product of the following reaction is

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The reaction of Benzene diazonium chloride with aniline yields a yellow dye. The name of the yellow dye is
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Products A and B formed in the following reactions are respectively:

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Action of NaNO2 with dilute HCl on ArNH2 yields ArN2+Cl-. A similar reaction with cyclohexylamine will yield
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Which of the following is not a chromophore?
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The diazonium salt of which of the following compounds will form a coloured dye on reaction with β-Naphthol in NaOH?
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Organic compound containing double and triple bonds that has a characteristic absorption in the UV region is
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Coupling of benzene diazonium chloride with 1-naphthol in alkaline medium will give:
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The reagent (s) used for the conversion of benzene diazonium hydrogensulfate to benzene is/are
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A given nitrogen-containing aromatic compound A reacts with Sn/HCl, followed by HNO2 to give an unstable compound B. B on treatment with phenol, forms a beautiful coloured compound C with the molecular formula C12H10N2O. The structure of compound A is