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The major product formed in the reaction given below will be:

  • Option 1)

  • Option 2)

  • Option 3)

  • Option 4)

  Fate of aliphatic diazonium ion - The diazonium ions of aliphatic amines are very unstable and produces carbocation immediately, which can produce different products.  - wherein      Fate of aromatic diazonium ion - Diazonium salts of aromatic amines are comparatively more stable and evolve nitrogen only on heating.These diazonium salts can be isolated at low temperatures. -             As...

Benzene diazonium chloride on reaction with aniline in the presence of dilute hydrochloric acid gives:

 

  • Option 1)

  • Option 2)

  • Option 3)

  • Option 4)

    Coupling reaction of aromatic diazonium - Diazonium ions of aromatic amines also undergo coupling reaction with aromatic rings having a strong activating group to form diazo compounds. - wherein      Option 1)Option 2)Option 3)Option 4)

The major product in the following reaction is:

  • Option 1)

  • Option 2)

  • Option 3)

  • Option 4)

      Basicity of Aromatic Amines - The unshared pair of electrons at the nitrogen atom is in resonance with the benzene ring and hence not fully available for donation as in the case of aniline. -       Nature of group and basicity - Electron withdrawing groups ( -I and -M  effect ) decreases basicity, whereas Electron releasing groups ( +I and +M  effect ) increases basicity. -...

The major product 'Y' in the following reaction is :

  • Option 1)

  • Option 2)

     

  • Option 3)

  • Option 4)

Option 1)Option 2) Option 3)Option 4)

The major product of the following reaction is : 

  • Option 1)

  • Option 2)

  • Option 3)

  • Option 4)

 
( Nucleophilicity of  is greater than  ,  thus  will attack on ).      The final product is : .  option (2) is correct.   Option 1) Option 2) Option 3) Option 4)

Ethylamine (C_{2}H_{5}NH_{2}) can be obtained from N-ethylphthalimide 

on treatment with:

  • Option 1)

    NH_{2}NH_{2}

  • Option 2)

    CaH_{2}

  • Option 3)

    NaBH_{4}

  • Option 4)

    H_{2}O

 Reagent used is . So, option (1) is correct.Option 1)Option 2)Option 3)Option 4)

Which of the following is NOT a correct method of the preparation of benzylamine from cyanobenzene ?

  • Option 1)

    H_{2}/Ni                   

  • Option 2)

     (i)\; \; LiAlH_{4}\; \; (ii)\; H_{3}O^{+}

  • Option 3)

     (i)\; SnCl_{2}+HCl\left ( gas \right )\; \; \; (ii)\; NaBH_{4}

  • Option 4)

    (i)\; HCl/H_{2}O\; \; (ii)\; NaBH_{4}

Option 1)                   Option 2) Option 3) Option 4)

Aniline dissolved in dilute HCl is reacted with sodium nitrite at 0^{\circ}C. This solution was added dropwise to a solution containing equimolar mixture of aniline and phenol in dil. HCl. The structure of the major product is :

  • Option 1)

      

  • Option 2)

      

  • Option 3)

      

  • Option 4)

       

                                                                                                                                                    Option 1)  Option 2)  Option 3)  Option 4)   

Coupling of benzene diazonium chloride with 1- naphthol in alkaline medium will give :

  • Option 1)

  • Option 2)

  • Option 3)

  • Option 4)

Option 1)Option 2)Option 3)Option 4)

Which of the following amines can be prepared by Gabriel phthalimide reaction?

  • Option 1)

    neo-pentylamine
     

  • Option 2)

    triethylamine

  • Option 3)

    n-butylamine

     

  • Option 4)

    t-butylamine

Gabriel phthalimide reaction is used for preparation of amine. So ans is :- n-butylamine amine  Option 1)neo-pentylamine  Option 2)triethylamineOption 3)n-butylamine  Option 4)t-butylamine

In the following compounds, the decreasing order of basic strength will be :

 

  • Option 1)

    C_{2}H_{5}NH_{2}>NH_{3}>(C_{2}H_{5})_{2}NH
     

  • Option 2)

    NH_{3}>C_{2}H_{5}NH_{2}>(C_{2}H_{5})_{2}NH

  • Option 3)

    (C_{2}H_{5})_{2}NH>C_{2}H_{5}NH_{2}>NH_{3}

     

  • Option 4)

    (C_{2}H_{5})_{2}NH>NH_{3}>C_{2}H_{5}NH_{2}

Option 1)  Option 2)Option 3)  Option 4)

 Among the following, the essential amino acid is :

  • Option 1)

    Alanine

  • Option 2)

     Valine

  • Option 3)

     Aspartic acid

  • Option 4)

     Serine

     

 
Option 1) Alanine Option 2)  Valine Option 3)  Aspartic acid Option 4)  Serine  

In the following compound, 

the favourable site/s for protonation is / are :

 

  • Option 1)

    (b), (c) and (d) 

  • Option 2)

    (a) and (e) 

  • Option 3)

    (a) 

  • Option 4)

    (a) and (d)

  Basicity of Aromatic Amines - The unshared pair of electrons at the nitrogen atom is in resonance with the benzene ring and hence not fully available for donation as in the case of aniline. -     Basic Strength of Amines - The basic strength of the amine is expressed as equilibrium constant Kb  - wherein     Nature of group and basicity - Electron withdrawing groups ( -I and -M  effect )...

The major product of the following reaction is :

  • Option 1)

  • Option 2)

  • Option 3)

  • Option 4)

  Stephen's reduction - By Stephen's reduction cyanides are converted into imines which on hydrolysis converts into aldehydes or ketones. - wherein   as we know    fig  Option 1)Option 2)Option 3)Option 4)

The polymer obtained from the following reactions is :

  • Option 1)

  • Option 2)

  • Option 3)

  • Option 4)

  Reaction with Nitrous Acid Primary Amines - Primary amines react with nitrous acid to produce diazonium ion. - wherein   as we know that fig   Fate of aliphatic diazonium ion - The diazonium ions of aliphatic amines are very unstable and produces carbocation immediately, which can produce different products.  - wherein        Option 1)Option 2)Option 3)Option 4)

What will be the major product in the following mononitration reaction?

\xrightarrow[conc H_{2}SO_{4}]{HNO_{3}}

  • Option 1)

  • Option 2)

  • Option 3)

  • Option 4)

  Preparation of Nitrobenzene medium - It is prepared by nitration of benzene by nitrating mixture conc. HNO3 and conc. H2SO4. At     - wherein    Option 1)Option 2)Option 3)Option 4)

Among the following compounds most basic amino acid is :

  • Option 1)

    Lysine 

  • Option 2)

    Serine 

  • Option 3)

    Histidine 

  • Option 4)

    Asparagine 

  Basic Strength of Amines - The basic strength of the amine is expressed as equilibrium constant Kb  - wherein As we have learned in amino acids the PI value of the compounds are Histidine ----7.6  Asparagine ---5.4 Serine ------5.7 Lysine -----9.8 There fore Lysine is the mos tbasicOption 1)Lysine Option 2)Serine Option 3)Histidine Option 4)Asparagine 

The increasing basicity order of the following compounds is :

 

  • Option 1)

    (A)<(B)<(C)<(D)

  • Option 2)

    (D)<(C)<(B)<(A)

  • Option 3)

    (D)<(C)<(A)<(B)

  • Option 4)

    (A)<(B)<(D)<(C)

  Basic Strength of Amines - The basic strength of the amine is expressed as equilibrium constant Kb  - wherein     General order of basicity - Aliphatic Amines > Ammonia > Aromatic Amines -    Option 1)(A)<(B)<(C)<(D)Option 2)(D)<(C)<(B)<(A)Option 3)(D)<(C)<(A)<(B)Option 4)(A)<(B)<(D)<(C)

The tests performed on compound X and their inferences are :

                   Test                                 Inference

(a) 2,4- DNP test                         Coloured precipitate

(b) Iodoform test                           Yellow precipitate

(c) Azo -Dye test                             No dye formation

Compound 'X' is :

 

  • Option 1)

  • Option 2)

  • Option 3)

  • Option 4)

  Tertiary Amines - Replacement of three H atom of ammonia by three  alkyl and aryl radicals yield teriary or  amines.  - wherein       Reduction of azo compounds - Azo compounds can be reduced to amines by a variety of reagents including stannous chloride ( SnCl2 ). - wherein Aldehyde and keton 2,4 - DNP test gives  Idoform test give  not in the plane of C6H6 hence no dye test.    Option...

The correct sequence of amino acids present in the tripeptide given below is :

 

  • Option 1)

    Thr - Ser - Val

  • Option 2)

    Val - Ser - Thr 

  • Option 3)

    Thr - Ser - Leu

  • Option 4)

    Leu - Ser - Thr 

  Amines - Amines are the derivatives of ammonia obtained by replacement of H atoms by any alkyl or aryl radicals.  -     Nomenclature of Tertiary Amines - As IUPAC system tertiary amines are named as N - alkyl - N - alkylalkanamines where alkyls are smaller groups and alkane is larger group. - wherein    Option 1)Thr - Ser - ValOption 2)Val - Ser - Thr Option 3)Thr - Ser - LeuOption 4)Leu -...
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