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An 'Assertion' and a 'Reason' are given below. Choose the correct answer from the following options:

Assertion (A): Vinyl halides do not undergo nucleophilic substitution easily.

Reason (R): Even though the intermediate carbocation is stabilized by loosely held the cleavage is difficult because of strong bonding.

 

  • Option 1)

    Both (A) and (R) are wrong statements

  • Option 2)

    Both (A) and (R) are the correct statement and (R) is the correct explanation of (A).

     

  • Option 3)

    Both (A) and (R) are correct statements but (R) isnot the correct explanation of (A).

     

  • Option 4)

    (A) is a correct statement but (R) wrong statement.

     

 

Vinayl Chloride -

Halogen present on double bonded carbon atom.

- wherein

 

 

 

 

Reactivity Order of alkyl halides -

1^{\circ}Alkyl\: Halide> 2^{\circ}Alkyl\: Halide> 3^{\circ}Alkyl \: Halide

 

- wherein

1^{\circ}Alkyl\: Halide> 2^{\circ}Alkyl\: Halide> 3^{\circ}Alkyl \: Halide

Inhibition by steric hindrance SN2 reactions are particularly sensitive to steric factors, since they are greatly retarded by steric hindrance (crowding) at the site of reaction. In general, the order of reactivity of alkyl halides in SN2 reactions is: methyl  > 1> 2o> 3o

 

 

 

 

vinyl halides do not undergo a substitution reaction. It is a fact so, it is true statement 

(R) 


Option 1)

Both (A) and (R) are wrong statements

Option 2)

Both (A) and (R) are the correct statement and (R) is the correct explanation of (A).

 

Option 3)

Both (A) and (R) are correct statements but (R) isnot the correct explanation of (A).

 

Option 4)

(A) is a correct statement but (R) wrong statement.

 

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The major products A and B for the following reactions are respectively :

  • Option 1)

  • Option 2)

  • Option 3)

  • Option 4)

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

Which of the following potential energy (PE) diagram represents the S_{N}1\: reaction ?

  • Option 1)

  • Option 2)

  • Option 3)

  • Option 4)

we all know is a two step reaction mechanism in which first step is rate determining step . hence the peak of first step is higher than the second step Option 1)Option 2)Option 3)Option 4)

The major product of the following reaction is :

  • Option 1)

  • Option 2)

  • Option 3)

  • Option 4)

option (3) is correct.Option 1)Option 2)Option 3)Option 4)

The major product obtained in the given reaction is :

  • Option 1)

  • Option 2)

  • Option 3)

  • Option 4)

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

Heating of 2-chloro-1-phenylbutazone with EtOK/EtOH gives X as the major product. The reaction of X with Hg(OAc)_{2}/H_{2}O followed by NaBH_{4} gives Y as the major product. Y is:

 

 

 

  • Option 1)

  • Option 2)

  • Option 3)

  • Option 4)

2-colors-1-phynylbitane  product is     Option 1)Option 2)Option 3)Option 4)

Which one of the following is likely to give a precipitate with AgNO_{3} solution?

 

  • Option 1)

    CH_{2}=CH-Cl

     

     

     

  • Option 2)

    CCl_{4}

  • Option 3)

    CHCl_{3}

  • Option 4)

    (CH_{3})_{3}CCl

  Test-butyl chloride gives the ppt immediately because of the formation of a most stable carbocation.     Option 1)      Option 2)Option 3)Option 4)

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)

Number of stereo centers present in linear and cyclic structures of glucose are respectively :

  • Option 1)

    5 & 4

  • Option 2)

    4 & 4

  • Option 3)

    5 5

  • Option 4)

    4 & 5

No. of Chiral Carbon or structure or stereocenter present in  (a) linear glucose =        (b) Cyclic glucose=  Option 1) & Option 2) & Option 3) & Option 4) & 

The major product of the following reaction is :

  • Option 1)

     

  • Option 2)

         

  • Option 3)

      

  • Option 4)

     

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

Polysubsititution is a major drawback in:

  • Option 1)

    Friedel Carft's alkylation

  • Option 2)

    Reimer Tiemann reaction

  • Option 3)

    Acetylation of aniline

  • Option 4)

    Friedel Carft's acylation

Friedel carft's alkylation                                  P+O- substituted products are formed  (Two e-releasing groups) Reactivity further increases. In alkylation  as reactivity is continuously increasing due to the substitution of alkyl group in benzene ring no monosubstituted product is formed  P.S. is drawbackOption 1)Friedel Carft's alkylationOption 2)Reimer Tiemann reactionOption...
Screenshot_1145.png Identify the major product.Pd, Na2CO3, H2O
Reaction with aldehyde Pd Na2CO3:
Screenshot_1138.png major product formed in given reaction?
Major Product formed in the given reaction can be calculated as: 
IMG_20190214_213721.jpg Product on Monobromination
Product on Monobromination is explained below:

 The major product of the following reaction is :
 

  • Option 1)

     CH2=CHCH2CH=CHCH3

  • Option 2)

     CH2=CHCH=CHCH2CH3

  • Option 3)

     CH3CH=C=CHCH2CH3

  • Option 4)

     CH3CH=CH−CH=CHCH3

     

 
Option 1)  CH2=CHCH2CH=CHCH3 Option 2)  CH2=CHCH=CHCH2CH3 Option 3)  CH3CH=C=CHCH2CH3 Option 4)  CH3CH=CH−CH=CHCH3  

Which of the following compounds will not undergo Friedel Craft’s reaction with benzene ?

 

  • 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)

  Reaction of alkyl halide with KOH (alc) - - elimination reaction take place and produces alkenes. - wherein   As we know that fig  Option 1)Option 2)Option 3)Option 4)

Which of the following compounds will produce a precipitate with AgNO_{3} ?

  • Option 1)

     

  • Option 2)

  • Option 3)

  • Option 4)

  The reaction of an alkyl halide with AgNO_{2} - Alkyl halides when treated with AgNO2 in aqueous ethanol, Nitro alkane is obtained as a product. - wherein   With  this compound will make ppt.Option 1)  Option 2)Option 3)Option 4)

The major product of the following reaction is :

  • Option 1)

     

  • Option 2)

     

  • Option 3)

     

  • Option 4)

     

  Reaction of alkyl halide with sodium alkoxide - When sodium alkoxide reacts with alkyl halide, substition of halide occurs resulting in formation of ether.This reaction is known as Willimnson's Synthesis. - wherein   As we have learned in dehydrohalogenation Option 1)  Option 2)  Option 3)  Option 4)  
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