Identify the compound that will react with Hinsberg's reagent to give a solid which dissolves in alkali.

1. 2.
3. 4.

Subtopic:  Identification of Primary, Secondary & Tertiary Amines |
 79%
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NEET - 2021
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The reagent 'R' in the given sequence of a chemical reaction is : 

   

1. HI 2. CuCN/KCN
3. H2O 4. CH3CH2OH
Subtopic:  Diazonium Salts: Preparation, Properties & Uses |
 53%
From NCERT
NEET - 2021
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The incorrect statement among the following is :

1. pK b  of aniline is more than methylamine.
2. Ethylamine is soluble in water whereas aniline is not.
3. Aniline undergo Friedel-Crafts reaction
4. Gabriel phthalimide synthesis is preferred for synthesizing primary amines.

Subtopic:  Amines - Preparation & Properties |
 77%
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The incorrect statement among the following is :

1. Acetylation is an example of a nucleophilic acyl substitution reaction.
2. In acetylation, amine reacts with an acid chloride, anhydrides, and esters.
3. Amines react with benzoyl chloride. The reaction is known as the coupling reaction.
4. Carboxylic acid reacts with amines and gives salts at room temperature.

Subtopic:  Identification of Primary, Secondary & Tertiary Amines |
 68%
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The correct statements among the following is :

1. Coupling reaction is an example of an electrophilic substitution reaction.
2. Azo dye contains -N=N- linkage.
3. p-Aminoazobenzene is obtained when diazonium salt reacts with an aniline.
4. All of the above

Subtopic:  Diazonium Salts: Preparation, Properties & Uses |
 91%
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Consider the following statements related to ammonolysis.

a. Cleavage of C-X bond by ammonia takes place.
b. Ammonolysis produces primary, secondary, tertiary amine and quaternary ammonium salt.
c. In ammonolysis, ammonia is a nucleophile.


The true statement(s) are-

1. a, b
2. a, b, c
3. a, c
4. b

Subtopic:  Amines - Preparation & Properties |
 83%
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C6H5NO2Sn/HCl AHNO2, 273K C6H5N2ClC6H5OH B

A and B in the above reaction sequence are -

1. C6H5N=NH, and  C6H6
2. C6H5NH2, and p-hydroxyazobenzene
3. C6H5N=NH, and  p-hydroxyazobenzene
4. C6H5NH2, and C6H5OH

Subtopic:  Diazonium Salts: Preparation, Properties & Uses |
 78%
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Identify compounds A, B, and C

 

1.     A  = ,  B =     , C =  

 

 

2.  A  = ,  B =     , C =  

 

 

3. A  =   ,  B =   , C =  

 

 

4. A  =   ,  B =   , C =  

Subtopic:  Mechanism |
 79%
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ANH3,  CH3CONH2 NaOBr BNaNO2/HCl CH3OH

A and B in the above reaction sequence are :

1. CH3CH2OH, and CH3CH2N2Cl
2. CH3COOH, and CH3CH2NH2
3. CH3COOH, and CH3NH2
4. CH3CH2Br, and CH3NH2

Subtopic:  Mechanism |
 73%
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The molecular formulae of A and B in the following are-
\(CH_3CH_2Br\xrightarrow{KCN}CH_3CH_2CN\xrightarrow{LiAlH_4}\\ A\xrightarrow {HNO_2,~0 \ ^{o}C}B\)
1. \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{NH}_{2}, and ~\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{3}\)
2. \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{NH}_{2}, and ~\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{OH}\)
3. \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}=\mathrm{NH}, and ~\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{OH}\)
4. \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}=\mathrm{NH}, and ~\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{3}\)

Subtopic:  Diazonium Salts: Preparation, Properties & Uses |
 82%
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