Which one of the following is the strongest base ?

• 2,4,6-trinitroaniline

• 2,4,6-trinitro-N,N-dimethyl aniline

• N, N-dimethyl aniline

• Anline

Hinsberg's reagent is

• benzene sulphonyl chloride

• benzene sulphonic acid

• phenyl isocyanide

• benzene sulphonamide

143.

The given reaction is called as

• Schmidt rearrangement

• Curtius rearrangement

• Hofmann rearrangement

• Lossen rearrangement

Correct basicity of the following compounds are

I. Aniline

II. Pyridine

III. Pyrrole

IV. Guanidine

• I >II >III >IV

• III >I >II >IV

• IV >II >I >III

• II >IV>III >I

One amine is more basic than ammonia and the other is less basic than ammonia. The two amines are respectively

• N-methyl ethanamine and N, N-dimethyl ethanamine

• aniline and N-methyl aniline

• N-methyl aniline and aniline

• N, N-dimethyl aniline and benzenamine

One of the isomer of C₄H₁₁N is optically active. It must be a

• primary amine

• secondary amine

• tertiary amine

• all isomers are optically inactive

Which of the following compounds cannot be identified by carbylamine test?

• CHCl₃

• C₆H₅-NH-C₆H₅

• C₆H₅NH₂

• CH₃CH₂NH₂

Acetamide and ethylamine can be distinguished ,by reacting with

• Br₂ water

• acidic KMnO₄

• aq HCl and heat

• aq NaOH and heat

The basicity of aniline is less than that of cyclohexylamine. This is due to :

• +R-effect of-NH₂ group

• -I effect of -NH₂ group

• -R effect of-NH₂ group

• hyperconjugation effect

Which of the following would undergo Hofmann reaction to give a primary amine?

• R-CO-Cl

• RCONHCH₃

• RCONH₂

• RCOOR