The above structure represents

(a)

Vitamin B₁₂

(b)

Vitamine B₆

(c)

dopamine

(d)

Histamine

Nitration of nitrobenzene results in

(a)

o-dinitrobenzene

(b)

1,3,5 trinitrobenzene

(c)

m-dinitrobenzene

(d)

p-dinitrobenzene

Which among the following reactions will give a secondary amine?

(a)

\(\mathrm{CH}_{3} \mathrm{CONH}_{2} \stackrel{\mathrm{Br}_{2} / \mathrm{KOH}}{\longrightarrow}\)

(b)

\(\mathrm{CH}_{3} \mathrm{CONH}_{2} \stackrel{\mathrm{LiAlH}_{4}}{\longrightarrow}\)

(c)

\({ CH }_{ 3 }CN\xrightarrow [ Na/{ C }_{ 2 }{ H }_{ 5 }OH ]{ } \)

(d)

\(\mathrm{CH}_{3} \mathrm{NC} \stackrel{\mathrm{LiAlH}_{4}}{\longrightarrow}\)

Identify product 'Y' in the following reaction

(a)

(b)

(c)

(d)

Electrolytic reduction of nitrobenzene in strongly acidic medium gives

(a)

aniline

(b)

p - aminophenol

(c)

m-nitroaniline

(d)

azoxybenzene

(CH₃)₂ - CH - NO when boiled with HCI/H₂O gives compound 'X'. Identify 'X'.

(a)

CH₃COOH

(b)

(CH₃)₂C = 0

(c)

CH₃CHO

(d)

CH₃NO₂

Ethylamine on heating with CS₂ in the presence of HgCl₂ forms

(a)

C₂H₅NCS

(b)

C₂H₅CN

(c)

C₂H₅NS

(d)

(C₂H₂)₂S

Which of the following cannot be prepared by Sandmeyer's reaction?

(a)

Iodobenzene

(b)

Fluorobenzene

(c)

both Iodobenzene and Fluorobenzene

(d)

neither Iodobenzene and Fluorobenzene

Identify the product of the following reaction.
CH₃Mg Br + CI - CN ⟶ ?

(a)

ethanenitrile

(b)

acetamide

(c)

propanenitrile

(d)

acetaldoxime

Positive carbylamine test is not shown by?

(a)

methyl amine

(b)

aniline

(c)

N -ethyl aniline

(d)

triethyl amine

The gas leaked from storage tank of the union Carbide plant in Bhopal gas tragedy was

(a)

Phosgene

(b)

methyl isocyanide

(c)

methyl isocyanate

(d)

methyl isothiocyanide

Identify the amide which will not undergo Hofmann bromamide reaction

(a)

CH₃CONHCH₃

(b)

CH₃CH₂CONH₂

(c)

CH₃CONH₂

(d)

both CH₃CH₂CONH₂ and CH₃CONH₂

Which among the following will from significant amount of meta isomer on nitration?

(a)

(b)

(c)

(d)

Which among the following exists as zwitter ion?

(a)

sulphanilic acid

(b)

salicylic acid

(c)

acetanilide

(d)

all the above

 Bromo ethane reacts with silver nitrite to give

(a)

C₂H₅NO₂

(b)

C₂H₅-O-NO

(c)

C₂H₅Ag+NaBr

(d)

C₂H₅NC