27) Which of the following is cyclohexanone? za 2=0 IV. ССН3 A) I B) II C)...
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
12. What would be the major product of the following reaction? i. Brz, NaOH ii. H20" ? mo Br НО. O II III Br Br ho IV A. I B. II C. III D. IV E. V 13. What would be the major product of the following reaction sequence? A. I B. II C. III D. IV E. V 2 i. LDA ii. CHEI De ci II I III IV V 14. Which of the following could be used to...
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
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...
Which of the following is the best method to prepare aspirin? I. II. III. IV. V. A) I B) II C) III D) IV E) V
) Which of the following is aromatic? IV. V. A) 1 B) II C) III D) IV E) V
What product is formed when acetophenone is reacted with fuming sulfuric acid? SOZH SOH I II IV A. II B. IV C. I D. III E. None 8. What product is formed when isopropylbenzene is reacted with 2-chloro-3-methylbutane and aluminum trichloride? I II III IV A. IV B. II C. I D. V E. III F. None
Question 1 Which of the following hydrogens is the most acidic? II IV I III A. IV B. V C. III D.I E. II Question 2 What is the product, Z, of the following reaction sequence? iz H30+ T-H20)* ia. CI H307 + Z مل I II III IV A. IV B. II C. III D.V E.
30) Which of the following is the most stable diene? L. IV. A)I B) C)III D)IV E) V 31) Which of the following is an aromatic hydrocarbon? IV -CH A)I B C)ID)IVE) V 32) Which of the following conjugated dienes will not react with a dieneophile in a Diels-Alder reaction? Π. IV A) I B)11 C)111 D) IVE) I and III 33) The conjugate acid of the compound shown below is B) aromatic D) antiaromatic. E) none of the above....