In a reaction of aniline a coloured product C was obtained.

The structure of C would be

(a) 

(b) 

(c) 

(d) 

Subtopic:  Diazonium Salts: Preparation, Properties & Uses |
 78%
NEET - 2008
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Mark the correct increasing order of basic strength of given molecules:

     (I)       (II)     (III)


1. III < I < II

2. III < II < I

3. II < I < III

4. II < III < I

Subtopic:  Amines - Preparation & Properties |
 78%
From NCERT
NEET - 2017
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Mark the correct reaction among the following to convert acetamide to methenamine:

1. Hoffmann bromamide reaction

2. Stephens reaction

3. Gabriels phthalimide synthesis

4. Carbylamine reaction

Subtopic:  Amines - Preparation & Properties | Identification of Primary, Secondary & Tertiary Amines |
 80%
From NCERT
NEET - 2017
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The nitration of aniline in a strong acidic medium results in the formation of m-nitroaniline because:

1. In spite of substituents nitro group always goes to only m-position
2. In electrophilic substitution reactions amino group is meta directive
3. In absence of substituents nitro group always goes to only m-position
4. In an acidic (strong) medium aniline is present as anilinium ion
Subtopic:  Amines - Preparation & Properties |
 71%
From NCERT
NEET - 2018
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

A nitro-compound among the following that does not react with nitrous acid is:

1.  2.
3.   4.  
 

Subtopic:  Urea & Nitro Compound |
 76%
NEET - 2016
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

A nitrogen-containing aromatic compound A reacts with Sn/HCl, followed by HNO2 to give an unstable compound B. On treatment with phenol, B forms a beautiful coloured compound C with the molecular formula C12H10N2O. The structure of compound A is:

1.  2.
3. 4.
 

Subtopic:  Urea & Nitro Compound |
 71%
From NCERT
NEET - 2016
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The correct statement regarding the basicity of arylamines is:

1. Arylamines are generally more basic than alkylamines because the lone-pair electrons of nitrogen are not delocalized by interaction with the aromatic ring π-electron system.
2. Arylamines are generally more basic than alkylamines because of the aryl group +I effect.
3. Arylamines are generally more basic than alkylamines because the nitrogen atom in arylamines is sp-hybridized.
4. Arylamines are generally less basic than alkylamines because the nitrogen lone-pair electrons are delocalized by interaction with the aromatic ring π-electron system.
Subtopic:  Amines - Preparation & Properties |
 83%
From NCERT
NEET - 2016
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The number of structural isomers possible from the molecular formula C3H9N is?

1. 4

2. 5

3. 2

4. 3

Subtopic:  Amines - Preparation & Properties |
 54%
From NCERT
NEET - 2015
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Mark the reaction that does not yield aniline from the given options:

1. Hydrolysis of phenyl isocyanide with an acidic solution
2. Degradation of benzamide with bromine in alkaline solution
3. Reduction of nitrobenzene with H2/Pd in ethanol
4. Treatment of Potassium salt of phthalimide with chlorobenzene followed by hydrolysis in an aqueous NaOH solution
Subtopic:  Amines - Preparation & Properties |
 65%
From NCERT
NEET - 2015
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

What is the name of the following reaction?

1. Friedel-Crafts reaction

2. Perkins reaction

3. Acetylation reaction

4. Schotten-Baumann reaction

Subtopic:  Amines - Preparation & Properties |
 52%
From NCERT
NEET - 2015
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh