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