Select the correct option based on statements below:
Assertion (A): | of aniline is higher than ethylamine. |
Reason (R): | The lone pair of group in aniline is involved in conjugation with a benzene ring. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |
Select the correct option based on statements below:
Assertion (A): | Aniline does not undergo the Friedel-Crafts reaction. |
Reason (R): | Diazonium salts of aromatic amines are more stable than those of aliphatic amines. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |
Select the correct option based on statements below:
Assertion (A): | is more basic than |
Reason (R): | Delocalization of a lone pair of electrons decreases the basic strength. |
1. | Both (A) and (R) are true and (R) is not the correct explanation of (A). |
2. | (A) is true but (R) is false |
3. | .Both (A) and (R) are true but (R) is the correct explanation of (A). |
4. | Both (A) and (R) are false. |
Select the correct option based on statements below:
Assertion (A): | C6H5NH2 is a 1° amine and can be prepared by Gabriel phthalimide synthesis. |
Reason (R): | C6H5NH2 is strongly basic in nature. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |
Based on the statements given, which option is correct?
Assertion (A): | Nitration of aniline at a low temperature gives 47% m-nitroaniline. |
Reason (R): | In acidic medium, group is converted into group which is m-directing. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | Both (A) and (R) are False. |
Select the correct option based on statements below:
Assertion (A): | Amines have a higher boiling point than the corresponding alcohols. |
Reason (R): | Alcohols possess intramolecular H-bonding. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |
Select the correct option based on statements below:
Assertion (A): | Secondary amines have higher boiling points than their respective tertiary isomers. |
Reason (R): | H-bonding is absent in tertiary amines. |
1. | Both (A) and (R) are true and (R) is not the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | (A) is false but (R) is true. |
The following reaction is the best method to introduce F to benzene:
The structure of intermediate compound A is:
1. | 2. | ||
3. | 4. |
Whose melting point is the highest?
1. | Primary amines | 2. | Secondary amines |
3. | Tertiary amines | 4. | Quaternary amines |
Which of the following amines doesn't give the carbylamine reaction?
1. | Ethylamine | 2. | Dimethylamine |
3. | Methylamine | 4. | Phenylamine |