The correct order of basicity of the following compounds is

• 1<2<3<4

• 1<2<4<3

• 2<1<3<4

• 4<3<2<1

Amongst the following compounds, the one(s) which readily react with ethanolic KCN.

• Ethyl chloride

• Chlorobenzene

• Benzaldehyde

• Salicylic acid

An amine C₃H₉N reacts with benzene sulphonyl chloride to form a white precipitate which is insoluble in aq. NaOH. The amine is

The reagent with which the following reaction is best accomplished is

• H₃PO₂

• H₃PO₃

• H₃PO₄

• NaHSO₃

The reaction of aniline with chloroform under alkaline conditions leads to the formation of

• phenylcyanide

• phenylisonitrile

• phenylcyanate

• phenylisocyanate

When aniline is nitrated with nitrating mixture in ice cold condition, the major product obtained is

• p-nitroaniline

• 2,4-dinitroaniline

• o-nitroaniline

• m-nitroaniline

The basicity of aniline is weaker in comparison to that of methyl amine due to

• hyperconjugative effect of Me-group in MeNH₂

• resonance effect of phenyl group in aniline

• lower molecular weight of methyl amine as compared to that of aniline

• resonance effect of - NH₂ group in MeNH₂

An organic compound X is oxidised by using acidified K₂Cr₂O₇. The product obtained reacts with phenyl hydrazine, but does not answer silver mirror test. The possible structure of X is

• CH₃COCH₃

• (CH₃)₂CHOH

• CH₃CHO

• CH₃CH₂OH

The increasing order of the rate of HCN addition to compound A-D is

A. HCHO                             B. CH₃COCH₃
C.PhCOCH₃                         D. PhCOPh

• A< B < C < D

• D< B< C< A

• D < C < B < A

• C < D< B< A

30.

In a set of reactions m - bromobenzoic acid gave a product D . Identify the product D

           

• 

• 

• 

•