Which of the following is the best method to prepare aspirin? I. II. III. IV. V....
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...
3. Rank in order of decreasing basicity: HC=C: CHCHO CHC HINO H₂C=Cif I III IV V A. III >I>V > II > IV D. III > IV > II >V>I B. III > V > IV >> II E. IV > II >I> III > V C. V>I> III > II > IV
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
Which of the following molecules/ions is/are likely to be planar? I. PCl3 II. BF4- III. XeF4 IV. BrF3 V. BrF5 VI. H3O+ A) I and IV B) II and III C) II and VI only D) III and IV E) IV and V
Which terms from this list BEST describe the following compound? H-C=c- I. Alkane II. Alkene III. Alkyne IV. Aromatic V. Saturated hydrocarbon VI. Unsaturated hydrocarbon I and V B. II and VI II and V C. III and VI D. E. III and V
Which of the following compounds have conjugated double bonds? I II III IV II and v II, IV, and v I and III I, III, and IV all of them
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.
) Which of the following is aromatic? IV. V. A) 1 B) II C) III D) IV E) V
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 can stemplots show? I. Symmetry II. Gaps III. Clusters IV. Outliers (A) I, II, and III (B) I, II, and IV (C) I, III, and IV (D) II, III, and IV (E) I, II, III, and IV