Tiêu đề HALOALKANE & HALOARENES - 02.pdf ✅

1 Varun JEE Advanced 2024 HALOALKANE & HALOARENES 1. The halides which will not give ppt. with AgNO3 (A) Cl (B) CH Cl 2 (C) Cl (D) Cl CH3 CH3 CH 3 2. The structure of 'H' is H D H D N(CH )3 2 CH I3 Ag O,H O 2 2 H ⎯⎯⎯→⎯⎯⎯⎯→  (A) H D D (B) H D D (C) H D H (D) H D D 3. Match List-I with List-II (no. of structural isomers produced in -E2 elimination) and select the correct answer. List-I List-II (a) H C 3 Br CH3 CH 3 H C 3 (i) Three (b) OH H C 3 CH3 CH3 (ii) Zero (c) H C Br 3 H C 3 CH3 CH 3 (iii)One (d) Br H C 3 CH3 CH 3 (iv) Two (a) (b) (c) (d) (A) (i) (ii) (iv) (iii) (B) (iv) (iii) (i) (ii) (C) (iv) (iii) (ii) (i) (D) (i) (iii) (iv) (ii) 4. What will be the final product when Ethyl benzene is treated with the reagent listed, below: (I) NBS, peroxide, heat (II) alcoholic KOH,  (III) B2H6 (IV) H2O2, HO– (A) Ph – CH2 – CH2 – OH (B) Ph CH CH2 OH Br (C) (D) Ph CH CH 2 Br OH 5. Cl 2 4 3 (conc. H SO /conc. HNO ) (i)KOH, H (A) +  ⎯⎯⎯⎯⎯⎯⎯⎯⎯→ ⎯⎯⎯⎯→  2 2 3 2 Br /H O Sn/HCl (CH CO) O (1equiv.) (1equiv.) (B) (C) (D) ⎯⎯⎯⎯→ ⎯⎯⎯⎯→ ⎯⎯⎯⎯⎯→(E) E will be: (A) Br O C CH3 O NH2 (B) OH Br NH C CH3 O (C) Br O C CH3 O NH2 (D) OH Br NH C CH3 O DPP-02
2 6. In which of the following case configuration about chiral C* is retained: (A) ⎯⎯→⎯⎯⎯→ Na CH Br 3 (B) ⎯⎯⎯→⎯⎯⎯⎯→ SOCl2 CH ONa 3 (C) ⎯⎯⎯→⎯⎯⎯⎯→ PCl CH ONa 3 3 (D) H /MeOH + ⎯⎯⎯⎯→ 7. In the given pairs, which pair represent correct order of dehydrohalogenating reaction. (A) < (B) < (C) < (D) CH3 – CH2 – Cl < CD3 – CD2 – Cl 8. Select option(s) in which incorrect major product is shown: (A) OH 3 4 conc.H PO  ⎯⎯⎯⎯⎯→ (B) OAc ⎯⎯→ (C) 3 2 3 NEt | Ph CH CH CH  − − − OH  ⎯⎯⎯→ - Ph–CH = CH–Me (D) 2 4 Br CCl ⎯⎯→ Me Me Br Br H H 9. Choose the incorrect option(s). (A) Rate of SN2 I > I (B) Opticallypure Ph CH —CH Me | | OH D − − N HI S 1 ⎯⎯→ racemic mixture (C) Me – Cl 2 Moist Ag O ⎯⎯⎯→ Me – O – Me (major) (D) MeI (excess) + NH3 ⎯→ Me3N 10. Select correct statement about the products. OH S-3,3-Dimethyl Butan-2-ol red P Br2 HBr SOBr 2 P1 P2 P3 H (A) P1 & P3 are identical (B) P1 & P2 are positional isomers (C) P1 & P3 are enantiomers (D) P2 & P3 are positional isomers. 11. Major product of the following reactions D Br H H CH3 CH3 OEt /EtOH  ⎯⎯⎯⎯→ - (A) D H CH3 CH3 (B) D CH3 H CH3 (C) H H CH3 CH3 (D) H CH3 H CH3
3 12. Cl > Cl > Cl Which mechanism(s) follow this order of rate during reactions. (A) E1 mechanism (B) E2 mechanism (C) SN1 mechanism (D) SN2 mechanism 13. How many of the following compounds are more reactive than Cl towards bimolecular substitution reaction? Cl O Cl Cl Cl Cl Cl Cl Cl O Cl O Cl Ph 14. (i) Cl Cl2 h ⎯⎯⎯→ number of theoretically possible dichloro derivatives (w) (ii) Number of all possible enols of formula C4H8O. (x) (iii) Number of chiral carbons in Diosgenin. (y) HO O O (iv) Number of geometrical isomer of product formed in following reaction. (z) O O || || H C C C H || O − − − − NH NH 2 2 (excess) − ⎯⎯⎯⎯⎯⎯→ C3H8N6 15. Br EtOH  (a) Above reaction can produce how many alkenes. (b) Out of all the alkenes how many will show geometrical isomerism (c) Out of all the alkenes how many will show optical isomerism. (d) How many organic products are obtained when major product of above reaction is treated with H2 / Ni Fill answer of part (a), (b), (c) & (d) in the order V X Y Z and present the four digit number as answer. For example: If all these answer are 9 then fill 9999. 16. How many monochloro derivatives are possible for 17. In how many reactions, major product is/are obtained by SN2 mechanism: (i) Me – CH2 – Cl NaI Acetone ⎯⎯⎯→ (ii) Me – Br ⎯⎯⎯→ NaCN (iii) Me | Me C Br | Me − − ⎯⎯⎯⎯→ aq.KOH (iv) Cl MeO Na ⎯⎯⎯⎯→ – (v) OH 2 4 HBr conc.H SO ⎯⎯⎯→ (vi) OH ⎯⎯⎯→ PCl3 (vii) Me – CH2 – OH ⎯⎯⎯→ SOCl2 (viii) OH SOCl2 py ⎯⎯⎯→
4 ANSWER KEY 1. (B) 2. (B) 3. (B) 4. (A) 5. (B) 6. ( A, C ) 7. ( A, C ) 8. (A, B, C, D ) 9. (A, B, C, D ) 10. (B, C, D ) 11 . (B) 12 . (A, B, C ) 13 . (000 4 ) 14 . (36 ) 15 . (6222 ) 16 . (14) 17 . (5)