In the above reaction, A is:
 
1. Cu2Cl2

2. H3PO2 and H2O

3. H+ / H2O

4. HgSO4 / H2SO4

 

Subtopic:  Diazonium Salts: Preparation, Properties & Uses |
 81%
From NCERT

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.


Among the following options, which diazonium salt would be the most stable?

1. CH3N2+X-

2. C6H5N2+X-

3. CH3CH2N2+X-

4. C6H5CH2N2+X-

Subtopic:  Diazonium Salts: Preparation, Properties & Uses |
 82%
From NCERT
AIPMT - 2014

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.


In the following reaction, the product (A) 
 is :
 
1. 
 
2. 
 
3. 
 
4. 

 

Subtopic:  Diazonium Salts: Preparation, Properties & Uses |
 85%
From NCERT
AIPMT - 2014

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.


advertisementadvertisement

The electrolytic reduction of nitrobenzene in strongly acidic medium produces
1. p-aminophenol
2. Azoxybenzene
3. Azobenzene
4. Aniline

 

Subtopic:  Diazonium Salts: Preparation, Properties & Uses | Urea & Nitro Compound |
NEET - 2015

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.

Hints

Method by which aniline cannot be prepared is

1. Hydrolysis phenyl isocyanide with acidic solution

2. Degradation of benzamide with bromine in alkaline Solution

3. Reduction of nitrobenzene with H/Pd in ethanol

4. Potassium salt of phthalimide treated with chlorobenzene followed by the hydrolysis aqueous NaOH solution

Subtopic:  Amines - Preparation & Properties |
 64%
From NCERT
NEET - 2015

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.


The correct statement regarding the basicity of arylamines is:
 
1. Arylamines are generally more basic than alkylamines because the nitrogen lone-pair electrons are not delocalized by interaction with the aromatic ring π-electron system
2. Arylamines are generally more basic than alkylamines because of aryl group
3. Arylamines are generally more basic than alkylamines, because the nitrogen atom in arylamines is sp-hybridlzed
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 |
 91%
From NCERT
NEET - 2016

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.


advertisementadvertisement

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

1.  

2.  

3.  

4.  

Subtopic:  Diazonium Salts: Preparation, Properties & Uses | Urea & Nitro Compound |
 80%
From NCERT
NEET - 2016

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.


Which one of the following nitro-compounds does not react with nitrous acid

1.  

2.  

3.  

4.  

Subtopic:  Urea & Nitro Compound |
 81%
NEET - 2016

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.

Hints

Nitration of aniline in strong acidic medium also gives 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 acidic (strong) medium aniline is present as anilinium ion

Subtopic:  Amines - Preparation & Properties |
 73%
From NCERT
NEET - 2018

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.


advertisementadvertisement

The correct increasing order of basic strength for the following compounds is: 
 
1. III<I<II
 
2. III<II<I
 
3. II<I<III
 
4. II<III<I

 

Subtopic:  Amines - Preparation & Properties |
 87%
From NCERT
NEET - 2017

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 20 chapters you need to be enrolled in MasterClass Course.