Q 11 :    

Consider the above chemical reaction product ''A'' is:                                          [2024]

  •  

  •  

  •  

  •  

(1)

Because of β crowding in the molecule, SN1 product is the major product.



Q 12 :    

Which among the following compounds will undergo fastest SN2 reaction?                             [2024]

  •  

  •  

  •  

  •  

(2)

Least crowded alkyl halide undergoes SN2 fastest, as nucleophile can approach the less crowded position with more ease. So order of reactivity of different alkyl halides for SN2 reaction is: 1°>2°>3°

 



Q 13 :    

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A): SN2 reaction of C6H5CH2Br occurs more readily than the SN2 reaction of CH3CH2Br.

Reason (R): The partially bonded unhybridized p-orbital that develops in the trigonal bipyramidal transition state is stabilized by conjugation with the phenyl ring.

In the light of the above statements, choose the most appropriate answer from the options given below:                                 [2024]

  • Both (A) and (R) are correct but (R) is not the correct explanation of (A).

     

  • (A) is correct but (R) is not correct.

     

  • (A) is not correct but (R) is correct.

     

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

     

(4)

 



Q 14 :    

In the following sequence of reaction, the major products B and C respectively are:                            [2024]

  •  

  •  

  •  

  •  

(3)



Q 15 :    

In the above reaction product 'P' is                                  [2024]

  •  

  •  

  •  

  •  

(3)

Aromatic ring present at β position acts as neighbouring group.

 

 



Q 16 :    

The total number of hydrogen atoms in product A and product B is _____.                  [2024]



(10)

Hydrogen atoms in A = 4, hydrogen atoms in B = 6, Sum = 10