Which of the following compound gives dye test

1. Aniline               

2. Methylamine                 

3. Diphenylamine                 

4. Ethylamine

Aniline in a set of reactions yield the following products                                                   

The structure of the product D would be -

1. C₆H₅CH₂NH₂

2. C₆H₅NHCH₂CH₃

3. C₆H₅NHOH

4. C₆H₅CH₂OH

In a reaction of aniline a colored product C was obtained.

The structure of C would be

1. 

2. 

3. 

4. 

Aniline when diazotised in cold and then treated with dimethylaniline, gives a coloured product. Its structure would be :                                                                                 

1.

2. 

3. 

4. 

An aromatic primary amine with cold nitrous acid leads to the formation of:

1. alcohol

2. nitrite

3. diazonium salt

4. benzene

When NaNO₂ and dilute HCl were added to an amine at $0°\mathrm{c}$, a colourless gas was evolved and an ionic compound is formed. The amine is:

1. any primary amine

2. an aromatic primary amine

3. any amine

4. none of the above

CH₃CH₂NH₂ contains a basic NH₂ group, but CH₃CONH₂ does not, because;

1. acetamide is amphoteric in character

2. in CH₃CH₂NH₂ the electron pair on N-atom is delocalized by resonance

3. in CH₃CH₂NH₂ there is no resonance, while in acetamide the lone pair of electron on N-atom is delocalized and therefore less available for protonation

4. none of the above

The above reaction is an example of....

1. Intermolecular C-N coupling
2. Intramolecular C-N coupling
3. Intermolecular N-N coupling
4. Intramolecular N-N coupling

In the below-mentioned reaction, the main byproduct (A) formed is:

1.		2.
3.		4.	None of these

Product (B) of this reaction is:-
1. 

2. 

3. 

4.