571.

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

Hofmann's bromamide reaction is to convert

• acid to alcohol

• alcohol to acid

• amide to amine

• amine to amide

Amines behave as

• Lewis acid

• Lewis base

• aprotic acid

• neutral compound

An alkyl halide reacts with alcoholic ammonia in a sealed tube, the product formed will be

• a primary amine

• a secondary amine

• a tertiary amine

• a mixture of all the three

Arrange the following in the increasing order of their basic strengths CH₃NH₂, (CH₃)₂NH, (CH₃)N, NH₃

• NH₃ < (CH₃)N < (CH₃)₂NH < CH₃NH₂

• NH₃ <  (CH₃)N < CH₃NH₂ < (CH₃)₂NH

• (CH₃)N < NH₃ < CH₃NH₂ < (CH₃)₂NH

• CH₃NH₂ < (CH₃)₂NH < (CH₃)N < NH₃

Which one of the following has the most nucleophilic nitrogen?

The correct sequence of reactions to convert p-nitrophenol into quinol involves

• reduction, diazotization and hydrolysis

• hydrolysis, diazotization and reduction

• hydrolysis, reduction and diazotization

• diazotization, reduction and hydrolysis

$$\begin{gathered} {\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{Br} \underset{∆}{\overset{\mathrm{aq} \mathrm{KOH}}{\to }} {\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{OH} \underset{∆}{\overset{{\mathrm{KMnO}}_4/{\mathrm{H}}^{+}}{\to }} \\ \mathrm{B} \underset{∆}{\overset{{\mathrm{NH}}_3}{\to }} \mathrm{C} \underset{\mathrm{alkali}}{\overset{{\mathrm{Br}}_2}{\to }} \mathrm{D}, \text{'}\mathrm{D}\text{'} \mathrm{is} \end{gathered}$$

• CH₂Br

• CH₃CONH₂

• CH₃NH₂

• CHBr₃