Question 1

What is the correct assignment of the names of the following substituted benzenes?

Accepted Answer

A)  I = Styrene; II = aniline; III = anisole
B)  I = Toluene; II = anisole; III = styrene
C)  I = Styrene; II = anisole; III = phenol
D)  I = Toluene; II = aniline; III = anisoleE) A) and B)
F) A) and C)

Question 2

Which of the following heterocycles is not aromatic?

Accepted Answer

A)  I
B)  II
C)  III
D)  IVE) B) and D)
F) None of the above

Question 3

Why is the following compound not aromatic?

Accepted Answer

A)  It has 4n pi electrons.
B)  It is not cyclic.
C)  It has 4n+2 pi electrons.
D)  The pi electron system is not continuous.E) All of the above
F) B) and D)

Question 4

Which of the following statements about the structure of benzene is not true?

Accepted Answer

A)  Benzene is planar.
B)  Benzene has three short double bonds alternating with three longer single bonds.
C)  The electrons in the pi bonds are delocalized around the ring.
D)  Benzene has six pi electrons.E) A) and C)
F) B) and D)

Question 5

What is the structure of a compound of molecular formula C10H14O2 that shows a strong IR absorption at 3150 ¾2850 cm-1 and gives the following 1H NMR absorptions: 1.4 (triplet,6H) ; 4.0 (quartet,4H) ; and 6.8 (singlet,4H) ppm? 10H14O2 that shows a strong IR absorption at 3150 ¾2850 cm-1 and gives the following 1H NMR absorptions: 1.4 (triplet,6H) ; 4.0 (quartet,4H) ; and 6.8 (singlet,4H) ppm?   A) I B) II C) III D) IV" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  I
B)  II
C)  III
D)  IVE) A) and D)
F) A) and C)

Question 6

What is the correct assignment of the names of the following substituted benzenes?

Accepted Answer

A)  I = Phenol; II = anisole; III = toluene
B)  I = Benzaldehyde; II = phenol; III = anisole
C)  I = Benzaldehyde; II = phenol; III = toluene
D)  I = Phenol; II = anisole; III = styreneE) B) and C)
F) All of the above

Question 7

Which of the following compounds is aromatic?

Accepted Answer

A)  I
B)  II
C)  III
D)  IVE) A) and B)
F) B) and C)

Question 8

What is the IUPAC name of the following compound?

Accepted Answer

A)  o-nitroanisole
B)  m-nitroanisole
C)  p-nitroanisole
D)  2-nitroanilineE) A) and B)
F) B) and C)

Question 9

What is the correct assignment of the names of the following fused aromatic compounds?

Accepted Answer

A)  I = naphthalene; II = anthracene; III = phenanthrene
B)  I = naphthalene; II = phenanthrene; III = anthracene
C)  I = naphthalene; II = phenanthrene; III = benzo[a]pyrene
D)  I = anthracene; II = naphthalene; III = phenanthreneE) A) and B)
F) B) and C)

Question 10

What is the IUPAC name of the following compound?

Accepted Answer

A)  1-Chloro-4-ethyl-3-propylbenzene
B)  1-Chloro-4-ethyl-5-propylbenzene
C)  4-Chloro-1-ethyl-2-propylbenzene
D)  4-Chloro-2-propyltolueneE) A) and B)
F) C) and D)

Question 11

What is the IUPAC name of the following compound?

Accepted Answer

A)  o-nitrotoluene
B)  m-nitrotoluene
C)  p-nitrotoluene
D)  3-nitroanisoleE) None of the above
F) A) and C)

Question 12

Which of the following ions is aromatic?

Accepted Answer

A)  I
B)  II
C)  III
D)  IVE) A) and B)
F) C) and D)

Question 13

Which of the following is not one of the Hückel's criteria for aromaticity?

Accepted Answer

A)  The molecule must be cyclic.
B)  The molecule must be planar.
C)  The molecule must be completely conjugated.
D)  The molecule must have 4n pi electrons.E) A) and B)
F) All of the above

Question 14

What is the correct structure for 1-bromo-2,4-dimethoxybenzene?

Accepted Answer

A)  I
B)  II
C)  III
D)  IVE) All of the above
F) A) and D)

Question 15

Why is the following compound not aromatic?

Accepted Answer

A)  It has 4n electrons.
B)  It is not cyclic.
C)  It has 4n+2 electrons.
D)  The pi electron system is not continuous.E) C) and D)
F) B) and D)

Question 16

Where do the protons in benzene appear in the 1H NMR spectrum?

Accepted Answer

A)  Around 1600 cm-1
B)  Around 120 ppm
C)  Around 0 ppm
D)  Around 7 ppmE) A) and C)
F) B) and C)

Question 17

What is the correct structure for toluene?

Accepted Answer

A)  I
B)  II
C)  III
D)  IVE) A) and B)
F) None of the above

Question 18

Which of the following is not a criterion for antiaromaticity?

Accepted Answer

A)  The molecule must be cyclic.
B)  The molecule must have (4n + 2) pi electrons.
C)  The molecule must be planar.
D)  The molecule must be completely conjugated.E) A) and B)
F) A) and C)

Question 19

What orbitals are used to form the indicated bond? 3 B) sp2 C) p D) sp3 and sp2" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  sp3
B)  sp2
C)  p
D)  sp3 and sp2E) A) and B)
F) C) and D)

Question 20

What orbitals are used to form the indicated bond? 3 B) sp2 C) p D) sp3 and sp2" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  sp3
B)  sp2
C)  p
D)  sp3 and sp2E) A) and B)
F) B) and C)

Exam 15: Benzene and Aromatic Compounds

Which of the following is not one of the Hückel's criteria for aromaticity?

Correct AnswerverifiedShow Answer

What is the correct assignment of the names of the following substituted benzenes?

Correct AnswerverifiedShow Answer

Which of the following is not a criterion for antiaromaticity?

Correct AnswerverifiedShow Answer

Which of the following ions is aromatic?

Correct AnswerverifiedShow Answer

Which of the following statements about the structure of benzene is not true?

Correct AnswerverifiedShow Answer

Where do the protons in benzene appear in the 1H NMR spectrum?

Correct AnswerverifiedShow Answer

What is the IUPAC name of the following compound?

Correct AnswerverifiedShow Answer

What orbitals are used to form the indicated bond?

Correct AnswerverifiedShow Answer

Why is the following compound not aromatic?

Correct AnswerverifiedShow Answer

What orbitals are used to form the indicated bond?

Correct AnswerverifiedShow Answer

Which of the following heterocycles is not aromatic?

Correct AnswerverifiedShow Answer

What is the IUPAC name of the following compound?

Correct AnswerverifiedShow Answer

What is the IUPAC name of the following compound?

Correct AnswerverifiedShow Answer

What is the correct assignment of the names of the following substituted benzenes?

Correct AnswerverifiedShow Answer

What is the correct structure for toluene?

Correct AnswerverifiedShow Answer

What is the correct assignment of the names of the following fused aromatic compounds?

Correct AnswerverifiedShow Answer

Which of the following compounds is aromatic?

Correct AnswerverifiedShow Answer

What is the correct structure for 1-bromo-2,4-dimethoxybenzene?

Correct AnswerverifiedShow Answer

What is the structure of a compound of molecular formula C10H14O2 that shows a strong IR absorption at 3150 ¾2850 cm-1 and gives the following 1H NMR absorptions: 1.4 (triplet,6H) ; 4.0 (quartet,4H) ; and 6.8 (singlet,4H) ppm?

Correct AnswerverifiedShow Answer

Why is the following compound not aromatic?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Where do the protons in benzene appear in the ¹H NMR spectrum?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

What is the structure of a compound of molecular formula C₁₀H₁₄O₂ that shows a strong IR absorption at 3150 ¾2850 cm^-1 and gives the following ¹H NMR absorptions: 1.4 (triplet,6H) ; 4.0 (quartet,4H) ; and 6.8 (singlet,4H) ppm?

Correct Answer
verified

Correct Answer
verified