1. Which of the following statements is incorrect about benzene? A) All of the carbon atoms...
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1. Which of the following statements is incorrect about benzene? A) All of the carbon atoms are sp hybridized. B) It has delocalized electrons. C) The carbon-carbon bond lengths are all the same. D) The carbon-hydrogen bond lengths are all the same. E) All twelve atoms lie in the same plane. 2. The delocalized system in benzene is formed by a cyclic overlap of 6 A) s (B) C) sp D) sp2 E) sp3 3.Identify the resonance hybrid. A) ✪ CH₂CH=CH-CH=CH-CH₂ ✪ CH₂CH=CH-CH-CH=CH₂ B) C) CH₂CH-CH=CH-CH=CH₂ D) Ⓒ 8+ 8+ CH₂CH=CH-CH==CH==CH₂ E) A, B, and C. II. 4. Which of the following pairs are resonance structures? CH3 CH3 8-6 and III. 8+ A) I CH₂ CH₂ 8-6 and CH3 CH₂ &-$ and IV. V. CH3 Ⓒ and and CH₂ CH₂ orbitals. W B) II C) III D) IV E) V 5. Draw two other resonance contributors for the following compound. 6. Draw all major resonance contributors of the species below. 7. Provide the major organic product of the following reaction. -C(CH₂) HBr 8. Which of the following is the strongest acid? CO₂H H 3-3 9. Rate the following molecules in decreasing order of stability. 10. Is he following molecule is aromatic? Why? 11. Is the following molecule aromatic? Explain. 12. Which of the following is an aromatic hydrocarbon? L IV. II. III. A) I B) II C) III D) IV E) V CH₂ V. CH=CH₂ 13. Which of the following is aromatic? III. A) I B) II C) III D) IV E) V II. III 14. Which of the following is the most stable cation? L CH₂=CH₂ IV. ICH₂CH= A) I B) II C) III D) IV E) V E CH₂- B) 1, 3-butadiyne C) 1,3-butadiene D) propyne E) ethane II. CH₂ IV. III A) I B) II C) III V. H. H 15. Which of the following compounds contains the longest carbon-carbon single bond? A) allene V. 16. Which of the following is a cumulated diene? L IV. CH₂-C-CH₂ CH₂ -CH-CH₂ V. 10 1:8 D) IV E) V 17. Which of the following is/are the major product(s) of the following reaction? HI L A) I B) I and II C) I and III D) II E) III II. E III. 18. Which of the following is the strongest acid? L OH OH A) I B) II C) III D) IV E) V A) CH₂ phenol IL OH CH2CH=CHCH3 Br + OH IV. ? V. III. 19. Why is phenol a stronger acid than cyclohexanol? OH OH CI cyclohexanol 20. Which of the following is/are the main product(s) of the following reaction? CH2=CH-CH=CH2 HBr? OH CI VOL B) CH₂CH₂CH=CH2 F 1 Br C) III. CH3CHCH=CH2 Br D) A and B E) A and C 21. What are the products from the following reaction? + Bry/CCL -? L A) I and II B) I and III II. C) I and IV D) II and III E) II and IV 22. Draw the product(s) for the reaction. HC A) I B) II -CH₂CH₂ 23. What is the product of the following reaction? beat C) III D) IV E) V III. IV. Be IV. ? 24. What is the product from the following reaction? COOK heat L II. III. A) I B) II C) III D) IV E) V II III. COOK A) I B) II C) III D) IV E) V COOK COOK COOK COOH COOK "COOH IV. V. V. 25. Which of the following dienes is the most reactive in a Diels-Alder reaction? I. IV. 7 COOK COOH COOK 1. Which of the following statements is incorrect about benzene? A) All of the carbon atoms are sp hybridized. B) It has delocalized electrons. C) The carbon-carbon bond lengths are all the same. D) The carbon-hydrogen bond lengths are all the same. E) All twelve atoms lie in the same plane. 2. The delocalized system in benzene is formed by a cyclic overlap of 6 A) s (B) C) sp D) sp2 E) sp3 3.Identify the resonance hybrid. A) ✪ CH₂CH=CH-CH=CH-CH₂ ✪ CH₂CH=CH-CH-CH=CH₂ B) C) CH₂CH-CH=CH-CH=CH₂ D) Ⓒ 8+ 8+ CH₂CH=CH-CH==CH==CH₂ E) A, B, and C. II. 4. Which of the following pairs are resonance structures? CH3 CH3 8-6 and III. 8+ A) I CH₂ CH₂ 8-6 and CH3 CH₂ &-$ and IV. V. CH3 Ⓒ and and CH₂ CH₂ orbitals. W B) II C) III D) IV E) V 5. Draw two other resonance contributors for the following compound. 6. Draw all major resonance contributors of the species below. 7. Provide the major organic product of the following reaction. -C(CH₂) HBr 8. Which of the following is the strongest acid? CO₂H H 3-3 9. Rate the following molecules in decreasing order of stability. 10. Is he following molecule is aromatic? Why? 11. Is the following molecule aromatic? Explain. 12. Which of the following is an aromatic hydrocarbon? L IV. II. III. A) I B) II C) III D) IV E) V CH₂ V. CH=CH₂ 13. Which of the following is aromatic? III. A) I B) II C) III D) IV E) V II. III 14. Which of the following is the most stable cation? L CH₂=CH₂ IV. ICH₂CH= A) I B) II C) III D) IV E) V E CH₂- B) 1, 3-butadiyne C) 1,3-butadiene D) propyne E) ethane II. CH₂ IV. III A) I B) II C) III V. H. H 15. Which of the following compounds contains the longest carbon-carbon single bond? A) allene V. 16. Which of the following is a cumulated diene? L IV. CH₂-C-CH₂ CH₂ -CH-CH₂ V. 10 1:8 D) IV E) V 17. Which of the following is/are the major product(s) of the following reaction? HI L A) I B) I and II C) I and III D) II E) III II. E III. 18. Which of the following is the strongest acid? L OH OH A) I B) II C) III D) IV E) V A) CH₂ phenol IL OH CH2CH=CHCH3 Br + OH IV. ? V. III. 19. Why is phenol a stronger acid than cyclohexanol? OH OH CI cyclohexanol 20. Which of the following is/are the main product(s) of the following reaction? CH2=CH-CH=CH2 HBr? OH CI VOL B) CH₂CH₂CH=CH2 F 1 Br C) III. CH3CHCH=CH2 Br D) A and B E) A and C 21. What are the products from the following reaction? + Bry/CCL -? L A) I and II B) I and III II. C) I and IV D) II and III E) II and IV 22. Draw the product(s) for the reaction. HC A) I B) II -CH₂CH₂ 23. What is the product of the following reaction? beat C) III D) IV E) V III. IV. Be IV. ? 24. What is the product from the following reaction? COOK heat L II. III. A) I B) II C) III D) IV E) V II III. COOK A) I B) II C) III D) IV E) V COOK COOK COOK COOH COOK "COOH IV. V. V. 25. Which of the following dienes is the most reactive in a Diels-Alder reaction? I. IV. 7 COOK COOH COOK 1. Which of the following statements is incorrect about benzene? A) All of the carbon atoms are sp hybridized. B) It has delocalized electrons. C) The carbon-carbon bond lengths are all the same. D) The carbon-hydrogen bond lengths are all the same. E) All twelve atoms lie in the same plane. 2. The delocalized system in benzene is formed by a cyclic overlap of 6 A) s (B) C) sp D) sp2 E) sp3 3.Identify the resonance hybrid. A) ✪ CH₂CH=CH-CH=CH-CH₂ ✪ CH₂CH=CH-CH-CH=CH₂ B) C) CH₂CH-CH=CH-CH=CH₂ D) Ⓒ 8+ 8+ CH₂CH=CH-CH==CH==CH₂ E) A, B, and C. II. 4. Which of the following pairs are resonance structures? CH3 CH3 8-6 and III. 8+ A) I CH₂ CH₂ 8-6 and CH3 CH₂ &-$ and IV. V. CH3 Ⓒ and and CH₂ CH₂ orbitals. W B) II C) III D) IV E) V 5. Draw two other resonance contributors for the following compound. 6. Draw all major resonance contributors of the species below. 7. Provide the major organic product of the following reaction. -C(CH₂) HBr 8. Which of the following is the strongest acid? CO₂H H 3-3 9. Rate the following molecules in decreasing order of stability. 10. Is he following molecule is aromatic? Why? 11. Is the following molecule aromatic? Explain. 12. Which of the following is an aromatic hydrocarbon? L IV. II. III. A) I B) II C) III D) IV E) V CH₂ V. CH=CH₂ 13. Which of the following is aromatic? III. A) I B) II C) III D) IV E) V II. III 14. Which of the following is the most stable cation? L CH₂=CH₂ IV. ICH₂CH= A) I B) II C) III D) IV E) V E CH₂- B) 1, 3-butadiyne C) 1,3-butadiene D) propyne E) ethane II. CH₂ IV. III A) I B) II C) III V. H. H 15. Which of the following compounds contains the longest carbon-carbon single bond? A) allene V. 16. Which of the following is a cumulated diene? L IV. CH₂-C-CH₂ CH₂ -CH-CH₂ V. 10 1:8 D) IV E) V 17. Which of the following is/are the major product(s) of the following reaction? HI L A) I B) I and II C) I and III D) II E) III II. E III. 18. Which of the following is the strongest acid? L OH OH A) I B) II C) III D) IV E) V A) CH₂ phenol IL OH CH2CH=CHCH3 Br + OH IV. ? V. III. 19. Why is phenol a stronger acid than cyclohexanol? OH OH CI cyclohexanol 20. Which of the following is/are the main product(s) of the following reaction? CH2=CH-CH=CH2 HBr? OH CI VOL B) CH₂CH₂CH=CH2 F 1 Br C) III. CH3CHCH=CH2 Br D) A and B E) A and C 21. What are the products from the following reaction? + Bry/CCL -? L A) I and II B) I and III II. C) I and IV D) II and III E) II and IV 22. Draw the product(s) for the reaction. HC A) I B) II -CH₂CH₂ 23. What is the product of the following reaction? beat C) III D) IV E) V III. IV. Be IV. ? 24. What is the product from the following reaction? COOK heat L II. III. A) I B) II C) III D) IV E) V II III. COOK A) I B) II C) III D) IV E) V COOK COOK COOK COOH COOK "COOH IV. V. V. 25. Which of the following dienes is the most reactive in a Diels-Alder reaction? I. IV. 7 COOK COOH COOK 1. Which of the following statements is incorrect about benzene? A) All of the carbon atoms are sp hybridized. B) It has delocalized electrons. C) The carbon-carbon bond lengths are all the same. D) The carbon-hydrogen bond lengths are all the same. E) All twelve atoms lie in the same plane. 2. The delocalized system in benzene is formed by a cyclic overlap of 6 A) s (B) C) sp D) sp2 E) sp3 3.Identify the resonance hybrid. A) ✪ CH₂CH=CH-CH=CH-CH₂ ✪ CH₂CH=CH-CH-CH=CH₂ B) C) CH₂CH-CH=CH-CH=CH₂ D) Ⓒ 8+ 8+ CH₂CH=CH-CH==CH==CH₂ E) A, B, and C. II. 4. Which of the following pairs are resonance structures? CH3 CH3 8-6 and III. 8+ A) I CH₂ CH₂ 8-6 and CH3 CH₂ &-$ and IV. V. CH3 Ⓒ and and CH₂ CH₂ orbitals. W B) II C) III D) IV E) V 5. Draw two other resonance contributors for the following compound. 6. Draw all major resonance contributors of the species below. 7. Provide the major organic product of the following reaction. -C(CH₂) HBr 8. Which of the following is the strongest acid? CO₂H H 3-3 9. Rate the following molecules in decreasing order of stability. 10. Is he following molecule is aromatic? Why? 11. Is the following molecule aromatic? Explain. 12. Which of the following is an aromatic hydrocarbon? L IV. II. III. A) I B) II C) III D) IV E) V CH₂ V. CH=CH₂ 13. Which of the following is aromatic? III. A) I B) II C) III D) IV E) V II. III 14. Which of the following is the most stable cation? L CH₂=CH₂ IV. ICH₂CH= A) I B) II C) III D) IV E) V E CH₂- B) 1, 3-butadiyne C) 1,3-butadiene D) propyne E) ethane II. CH₂ IV. III A) I B) II C) III V. H. H 15. Which of the following compounds contains the longest carbon-carbon single bond? A) allene V. 16. Which of the following is a cumulated diene? L IV. CH₂-C-CH₂ CH₂ -CH-CH₂ V. 10 1:8 D) IV E) V 17. Which of the following is/are the major product(s) of the following reaction? HI L A) I B) I and II C) I and III D) II E) III II. E III. 18. Which of the following is the strongest acid? L OH OH A) I B) II C) III D) IV E) V A) CH₂ phenol IL OH CH2CH=CHCH3 Br + OH IV. ? V. III. 19. Why is phenol a stronger acid than cyclohexanol? OH OH CI cyclohexanol 20. Which of the following is/are the main product(s) of the following reaction? CH2=CH-CH=CH2 HBr? OH CI VOL B) CH₂CH₂CH=CH2 F 1 Br C) III. CH3CHCH=CH2 Br D) A and B E) A and C 21. What are the products from the following reaction? + Bry/CCL -? L A) I and II B) I and III II. C) I and IV D) II and III E) II and IV 22. Draw the product(s) for the reaction. HC A) I B) II -CH₂CH₂ 23. What is the product of the following reaction? beat C) III D) IV E) V III. IV. Be IV. ? 24. What is the product from the following reaction? COOK heat L II. III. A) I B) II C) III D) IV E) V II III. COOK A) I B) II C) III D) IV E) V COOK COOK COOK COOH COOK "COOH IV. V. V. 25. Which of the following dienes is the most reactive in a Diels-Alder reaction? I. IV. 7 COOK COOH COOK
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