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 , 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.