Compounds containing nitrogen

Mcq by Anupama Singh

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When aniline is heated with conc. H2SO4 at 455-475 K, it forms :

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Aniline hydrogen sulphate

m-Aminobenzensulphonic acid

Benzenesulphonic acid

Sulphanilic acid

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Which of the following will not give coloured dye with benzene diazonium chloride?

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2-naphthol

Benzylalcohol

Phenol

o-cresol

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In a chemical reaction:C6H5NH2 + NaNO2+HCL gives A, Which reacts with HBF4 on heating to give B. The compounds A and B are

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Benzenediazonium chloride and fluorobenzene

Nitrobenzene and chlorobenzene

Benzenediazonium chloride and benzenediazoniumfluoroborate

Phenol and benzene

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The correct statement regarding the basicity of arylamines is

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Arylamines are generally more basic than alkylamines because of aryl group

Arylamines are generally more basic than alkylamines, because the nitrogen atom in arylamines is sp-hybridized

Arylamines are generally less basic than alkylamines because the nitrogen lone-pair electrons are delocalized by interaction with the aromatic ring π electron system

Arylamines are generally more basic than alkylamines because the nitrogen lone-pair electrons are not delocalized by interaction with the aromatic ring π electron system

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A highly volatile carbon compound (C2H7N) which give carbylamine reaction and is soluble in hydrochloric acid and the solution on treatment with sodium nitrite and HCl gives off nitrogen leaving behind a solution which has an alcoholic smell. The compound is

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C2H5NH2

CH3NHCH3

Both (a) and (b)

None of these

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Azo dye test is given by:

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All amines

Only primary amines

Only aliphatic primary amines

Only aromatic primary amines

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Predict the product of the following reaction. p-Nitroaniline + NaNO2, HCl followed by KI

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p-diiodobenzene

p-dinitrobenzene

2,4-dinitroaniline

p-iodonitrobenzene

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