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Q. No.

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

1.
 

2. 
 

3. 
 

4. 

Subtopic:  Diazonium Salts: Preparation, Properties & Uses |
 75%
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A: Lower aliphatic amines are soluble in water.

R: Lower aliphatic amines can form intermolecular H-bonding with H2O.

1. Both Assertion & Reason are true and the reason is the correct explanation of the assertion.

2. Both Assertion & Reason are true but the reason is not the correct explanation of the assertion

3. Assertion is a true statement but Reason is false

4. Both Assertion & Reason are false statements

 

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Amines - Preparation & Properties |
 87%
From NCERT
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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.

Subtopic:  Amines - Preparation & Properties |
 63%
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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.
Subtopic:  Amines - Preparation & Properties |
 68%
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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, NH2 group is converted into -N+H3 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.
Subtopic:  Mechanism |
 84%
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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.

Subtopic:  Amines - Preparation & Properties |
 70%
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Select the correct option based on statements below:

Assertion (A):  pKb of aniline is higher than ethylamine.
Reason (R): The lone pair of -NH2 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.
Subtopic:  Amines - Preparation & Properties |
 85%
From NCERT
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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.
Subtopic:  Diazonium Salts: Preparation, Properties & Uses |
 71%
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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.
Subtopic:  Amines - Preparation & Properties |
 56%
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The major product of the following reaction is -

 -

1.  

2.  

3.  

4.  

Subtopic:  Diazonium Salts: Preparation, Properties & Uses |
 84%
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