Mark the correct statement:

(1) Methyl amine is slightly acidic.

(2) Methyl amine is less basic than ammonia.

(3) Methyl amine is a stronger base than ammonia.

(4) Methyl amine forms salts with alkali.

Which one of the following amines will not react with ${\mathrm{HNO}}_2$ acid to give nitrogen?

(1) ${\mathrm{CH}}_3{\mathrm{NH}}_2$

(2) ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{NH}}_2$

(3) ${\mathrm{CH}}_3-\underset{\underset{{\mathrm{CH}}_3}{|}}{\mathrm{C}}\mathrm{H}-{\mathrm{NH}}_2$

(4) 

What is decreasing order of basicity of p-, s-, t-ethyl amines and ${\mathrm{NH}}_3$ in aqueous medium ?

(1) NH₃>C₂H₅NH₂>(C₂H₅)₂NH>(C₂H₅)₃N

(2) (C₂H₅)₃N>(C₂H₅)₂NH>C₂H₅NH₂>NH₃

(3) (C₂H₅)₂NH>C₂H₅NH₂>NH₃>(C₂H₅)₃N

(4) (C₂H₅)₂NH>(C₂H₅)₃N>C₂H₅NH₂>NH₃

Urea on heating with ethanol gives:

1. Urethane

2. Urea alcohol

3. Ureides

4. None of the above

Alkyl nitrite on reduction with Sn/HCl gives:

1. Alcohol

2. Hydroxylamine

3. Both (a) and (b)

4. Hydrazine

Primary, secondary and teritary nitroalkanes can be identified by the action of:

1. HNO₂+NaOH(aq.)

2. CHCl₃+NaOH (aq.)

3. CHCl₃+KOH (alc.)

4. None of the above

Which of the following compounds is expected to be the most basic?

(1) Aniline

(2) Ethylamine

(3) Hydroxylamine

(4) Methylamine

The reaction,

${\mathrm{CH}}_3\mathrm{CN}+4\mathrm{H}\stackrel{\mathrm{Na}/{\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}}{\to }{\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{NH}}_2$ is called:

1. Hofmann's bromamide reaction

2. Mendius reaction

3. Sabatier reaction

4. None of the above

A colourless organic compound gave brisk effervescence with a mixture of ${\mathrm{NaNO}}_2$ and dil. HCl. It could be:

(1) glucose 

(2) oxalic acid

(3) urea 

(4)benzoic acid

Aliphatic amines are ......basic than ${\mathrm{NH}}_3$ but aromatic amines are .....basic than ${\mathrm{NH}}_3$

(1) more, less

(2) less, more

(3) both (a) and (b) 

(4) none of these