The formula of A and B in the following reaction is -

C6H5N2ClCuCNC6H5CNH2O/H+ANH3,B
1. C6H5COOH,andC6H5CONH2
2. C6H5COOH,andC6H5NH2
3. C6H5CH2NH2,andC6H5CH2N=NH
4. C6H5CH2NH2,andC6H5CH2N=NH

Subtopic:  Amines - Preparation & Properties |
 77%
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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. \(\mathrm{{CH}_{3} {CH}_{2} {CH}_{2} {NH}_{2}}, ~\text{and} ~\mathrm{{CH}_{3} {CH}_{2} {CH}_{3}}\)
2. \(\mathrm{{CH}_{3} {CH}_{2} {CH}_{2} {NH}_{2}},~\text{and} ~\mathrm{{CH}_{3} {CH}_{2} {CH}_{2} {OH}}\)
3. \(\mathrm{{CH}_{3} {CH}_{2} {CH}={NH}}, ~\text{and} ~\mathrm{{CH}_{3} {CH}_{2} {CH}_{2} {OH}}\)
4. \(\mathrm{{CH}_{3} {CH}_{2} {CH}={NH}}, ~\text{and} ~\mathrm{{CH}_{3} {CH}_{2} {CH}_{3}}\)

Subtopic:  Diazonium Salts: Preparation, Properties & Uses |
 83%
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ANH3,CH3CONH2NaOBrBNaNO2/HClCH3OH

A and B in the above reaction sequence are :

1.CH3CH2OH,andCH3CH2N2Cl
2.CH3COOH,andCH3CH2NH2
3.CH3COOH,andCH3NH2
4.CH3CH2Br,andCH3NH2

Subtopic:  Mechanism |
 75%
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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 |
 80%
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C6H5NO2Sn/HClAHNO2,273KC6H5N2ClC6H5OHB

A and B in the above reaction sequence are -

1.C6H5N=NH,andC6H6
2.C6H5NH2,andp-hydroxyazobenzene
3.C6H5N=NH,andp-hydroxyazobenzene
4.C6H5NH2,andC6H5OH

Subtopic:  Diazonium Salts: Preparation, Properties & Uses |
 79%
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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 |
 84%
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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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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 |
 69%
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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 |
 79%
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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 |
 80%
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