Q 1 :

Given below are two statements:                              [2025]

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

  • Both Statement I and Statement II are incorrect

     

  • Both Statement I and Statement II are correct

     

  • Statement I is incorrect but Statement II is correct

     

  • Statement I is correct but Statement II is incorrect

     

(2)

In certain substrate molecules with certain type of arrangement of atoms i.e. generally the presence of unshared electron pair at β position to the leaving group, nucleophilic substitutions reactions occur at unexpectedly higher rate along with retention of configuration. This rate enhancement by neighbouring group participation is called anchimeric assistance. N can act as neighbouring group.



Q 2 :

Match List–I with List–II.                   [2025]

  List–I   List–II
  (Name reaction)   (Product obtainable)
A. Swarts reaction I. Ethyl benzene
B. Sandmeyer’s reaction II. Ethyl iodide
C. Wurtz Fittig reaction III. Cyanobenzene
D. Finkelstein reaction IV. Ethyl fluoride

 

Choose the correct answer from the options given below:

  • A–IV, B–I, C–III, D–II

     

  • A–II, B–III, C–I, D–IV

     

  • A–IV, B–III, C–I, D–II

     

  • A–II, B–I, C–III, D–IV

     

(3)

(A)   C2H5Cl→AgFC2H5FEthyl fluoride+AgCl

(B) 

(C) 

(D) C2H5Cl+NaI→(Finkelstein reaction)AcetoneC2H5I+NaCl

 



Q 3 :

Match List–I with List–II.           [2025]

  List-I   List–II
  (Reaction)   (Name of Reaction)
A. I. Lucas reaction
B. ArN2+X-→HClCuArCl+N2↑+CuX II. Finkelstein reaction
C. C2H5Br+NaI→AcetoneDryC2H5I+NaBr III. Fittig reaction
D. CH3C(OH)(CH3)CH3→ZnCl2HClCH3C(Cl)(CH3)CH3 IV. Gattermann reaction

 

Choose the correct answer from the options given below:

  • (A)–(III), (B)–(II), (C)–(IV), (D)–(I)

     

  • (A)–(III), (B)–(IV), (C)–(II), (D)–(I)

     

  • (A)–(IV), (B)–(III), (C)–(I), (D)–(II)

     

  • (A)–(IV), (B)–(I), (C)–(II), (D)–(III)

     

(2)

Fact based

 



Q 4 :

Predict the major product of the following reaction sequence:            [2025]

  •  

  •  

  •  

  •  

(2)

 



Q 5 :

Consider the above sequence of reactions. 151 g of 2-bromopentane is made to react. Yield of major product P is 80% whereas Q is 100%.

Mass of product Q obtained is ______ g.

(Given molar mass in g mol-1: H : 1, C : 12, O : 16, Br : 80)  [2025]



(184)

Moles of 2-bromopentane taken initially = Mass of 2-bromopentaneMolar mass of 2-bromopentane
=151151=1 mol

Molar mass of Q (C5H10Br2)

=(5×12+10×1+2×80)g mol-1=230g mol-1

Mass of 0.8 mol Q =0.8×230 g=184 g



Q 6 :

Match List I with List II                                [2023]

Choose the correct answer from the options given below:

  • A – III, B – II, C – IV, D – I

     

  • A – II, B – I, C – IV, D – III

     

  • A – IV, B – II, C – III, D – I

     

  • A – II, B – I, C – III, D – IV

     

(2) 

Alkyl halide→etherNaalkane→Wurtz reaction

Aryl halide→etherNaAromatic hydrocarbon→Fittig reaction

Alkyl halide+Aryl halide→etherNaalkane→Wurtz Fittig reaction

PhN2Cl→Cu2Cl2Sandmeyer reaction



Q 7 :

Identify the incorrect option from the following:            [2023]

  •  

  •  

  •  

  •  

(1)



Q 8 :

Given below are two statements:

Statement I: 3-phenylpropene reacts with HBr and gives secondary alkyl bromide having a chiral carbon atom as the major product.

Statement II: Aryl chlorides and aryl cyanides can be prepared by Sandmeyer reaction as well as Gattermann reaction.

In the light of the above statements, choose the correct answer from the options given below:          [2026]

  • Both Statement I and Statement II are true

     

  • Both Statement I and Statement II are false

     

  • Statement I is true but Statement II is false

     

  • Statement I is false but Statement II is true

     

(3)

Statement I:

[IMAGE 217]

Statement II: Gattermann reaction does not form aryl cyanide.



Q 9 :

Given below are two statements:

Statement I: Due to increase in van der Waals forces, the order of boiling points is CH3CH2CH2I>CH3CH2I>CH3I.

Statement II: [IMAGE 218]

In the light of the above statements, choose the correct answer from the options given below:               [2026]

  • Both Statement I and Statement II are true

     

  • Both Statement I and Statement II are false

     

  • Statement I is true but Statement II is false

     

  • Statement I is false but Statement II is true

     

(1)

Statement I: Due to increase in size of the molecule, van der Waals forces increase and hence boiling point increases.

Statement II:

[IMAGE 219]