The following reaction is the best method to introduce F to benzene:


The structure of intermediate compound A is:

1.  2.   
3.   4.  
 

Subtopic:  Diazonium Salts: Preparation, Properties & Uses |
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The structure of the main product of the following reaction will be:
  \(\xrightarrow[]{Br_2,\ \text{heat or light}}\ \text{Product}\)

1.  2.
3. 4.
 

Subtopic:  Urea & Nitro Compound |
 60%
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Which amine gives the carbylamine test?

1.    2.   
3.    4.   
Subtopic:  Identification of Primary, Secondary & Tertiary Amines |
 84%
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When   is reduced with Sn / HCl, the pair of products formed is :

1. Ethanol, hydroxylamine hydrochloride 
2. Ethanol, ammonium hydroxide
3. Ethanol, NH2OH
4. \(C_3H_5NH_2, H_2O\)

Subtopic:  Urea & Nitro Compound |
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Whose melting point is the highest?

1. Primary amines 2. Secondary amines
3. Tertiary amines 4. Quaternary amines
Subtopic:  Amines - Preparation & Properties |
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The reagent that is used to change nitromethane into methylhydroxylamine is: 

1. Zn/NaOH

2. Sn/HCl

3. Zn/NH4Cl

4. Zn/HCl

Subtopic:  Urea & Nitro Compound |
 58%
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Which of the following amines doesn't give the carbylamine reaction?

1. Ethylamine 2. Dimethylamine
3. Methylamine 4. Phenylamine
Subtopic:  Identification of Primary, Secondary & Tertiary Amines |
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Which of the following is most reactive to electrophilic substitution?

1. Nitrobenzene 2. Aniline
3. Aniline hydrochloric 4. n-Acetylaniline
Subtopic:  Amines - Preparation & Properties |
 56%
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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 |
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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 |
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