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23) Which of the following is a benzylic radical? - ॥ A A)I B) II C)...
1. Which of the following structures is/are a secondary alkyl
halide? (a) I and II (b) II and V (c) I, II and V (d) IV only (e)
I, II and III 2. Which of the following is/are aprotic solvent(s)?
Choose all correct answers. (a) (b) (c) (d) (e) (f) 3. Which of the
following carbocations, if formed, is (are) likely to undergo
rearrangement through a hydride shift? (a) I (b) II (c) III (d) I
and II (e) II...
Which of the following series converge? III. a) III only b) II only c) II and III d) I only e) I and II 1) I, II, and III
Q 10.7: Which arrow pushing diagram below represents the formation of a benzylic radical?
5. Which one of the following is nonaromatic? III IV I II A. IV B. I C. II D. III E. None 6. Which is the correct bond order for the C-C bonds in benzene? 1.0 20 1.25 1.75 1.5 1.5 20 10 A. III B. C. IV D. II E. None
19. Which of the following molecules are achiral? A) II, III B) I, II C) I, IV D) III, IV 20. How many stereogenic centers are present in ephedrine, a bronchodilator and decongestant? ephedrine A) 0 B) 1 C) 2 D) 3 21. Rank the following groups in order of decreasing priority according to the Cahn-Ingold- Prelog system. -NH2 -NHCH3 -CH2NH2 CH2NHCH3 п V . A) B) I>II> III > IV II >I>IV > III II C II >I> III...
Which of the following compounds is least acidic? a. I b. II c. III d. IV e. V HBr HCI NH3 ?? IV
Which of the following is/are false regarding radical mechanisms? i. Lone pairs are not directly involved in coordination ii. There are different activation energies for each SH2 step iii. Peroxides are the only chemical initiating source O i. only O i., ii., and iii. O ii. and iii. Oii. only
11. Identify the product(s) of the following reaction. A. I B. II C. III D. IV E. V Gom Do is a From co be on) porno porno olyan 12. What is the final product obtained when toluene is subjected to the following reaction sequence? i) Clz (large excess), heat, hv; ii) OH-/H20, heat; iii) H30+ A. I OH B. II OH COH C. III U OH D. IV E. V I II Hol YCC, III HOCCI3 C/ стон с...
23. Which of the following correctly ranks the compounds below by ascending boiling point? I. CH3COCH II. KC III. Kr IV. CH:CH(OH)CH A. I<II<IV<III . . B. III <IV<I<II I . C. II<IV <I<III D. III <I<IV<II
23. Which of the following correctly ranks the compounds below by ascending boiling point? I. CH3COCH3 II. KC1 III. Kr IV. CH3CH(OH)CH3 A. I< II <IV <II B. III <IV <I<II C. II<IV <I< III D. III <I<IV < II