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Topic Question Set

Q 31 :

Match List I with List II                                                 [2023]

1-Bromopropane is reacted with reagents in List I to give product in List II.

  List I – Reagent   List II – Product
A. KOH (alc) I. Nitrile
B. KCN (alc) II. Ester
C. AgNO2 III. Alkene
D. CH3COOAg IV. Nitroalkane

Choose the correct answer from the options given below:

  • A-IV, B-III, C-II, D-I

     

  • A-III, B-I, C-IV, D-II

     

  • A-I, B-II, C-III, D-IV

     

  • A-I, B-III, C-IV, D-II

     

(2)

Q 32 :

As compared with chlorocyclohexane, which of the following statements correctly apply to chlorobenzene?

A. The magnitude of negative charge is more on chlorine atom.
B. The C–Cl bond has partial double bond character.
C. C–Cl bond is less polar.
D. C–Cl bond is longer due to repulsion between delocalised electrons of the aromatic ring and lone pairs of electrons of chlorine.
E. The C–Cl bond is formed using sp2 hybridised orbital of carbon.

Choose the correct answer from the options given below:                            [2026]

  • B, C and D only

     

  • A, C and E only

     

  • B, C and E only

     

  • A, D and E only

     

(3)

 

Q 33 :

Given below are two statements:                                        [2026]

Statement I: The dipole moment of R–CN is greater than R–NC and R–NC can undergo hydrolysis under acidic medium to produce .

Statement II: R–CN hydrolyses under acidic medium to produce a compound which on treatment with SOCl2, followed by the addition of NH3 gives another compound (x). This compound (x) on treatment with NaOCl/NaOH gives a product, that on treatment with CHCl3/KOH/Δ produces R–NC.

In the light of the above statements, choose the correct answer from the options given below:

  • Statement I is false but Statement II is true

     

  • Statement I is true but Statement II is false

     

  • Both Statement I and Statement II are true

     

  • Both Statement I and Statement II are false

     

(1)

 

Q 34 :

The correct order of reactivity of the following benzyl halides towards reaction with KCN is :   [2026]

  • a>b>c>d

     

  • b>a>c>d

     

  • a>b>d>c

     

  • b>a>d>c

     

(4)