Which of the following statements is false? A) Furan, pyrrole, ...

[sammy]

Which of the following statements is false?
  A)
  Furan, pyrrole, and thiophene are more reactive than benzene in electrophilic aromatic substitution.
  B)
  Electrophilic substitution in pyridine occurs mainly in the 2- and 4-positions.
  C)
  Electrophilic substitution in furan, pyrrole, and thiophene occurs mainly in the 2-position.
  D)
  Pyridine is more basic than pyrrole.
  E)
  An unshared electron pair on O, N, or S is part of the aromatic p system in furan, pyrrole, and thiophene.

Question 2

Which of the following heterocyclic compounds is not aromatic?
  A)
   
 
  D)
   
 
  B)
   
 
  E)
   
 
  C)
   
 

Question 3

Which of the following molecules can be classified as a heterocycle?
  A)
   
 
  D)
   
 
  B)
   
 
  E)
   
 
  C)
   
 

Question 4

The structural formula for furan is:
  A)
   
 
  D)
   
 
  B)
   
 
  E)
   
 
  C)
   
 

Question 5

The name of is:
   
  A)
  pyrrole
  B)
  furan
  C)
  pyridine
  D)
  pyrimidine
  E)
  thiophene

Question 6

What type of heterocycle is present in both histamine and histidine?
   
   
   
   
  A)
  indole
  B)
  pyrimidine
  C)
  purine
  D)
  imidazole
  E)
  thiazole

Question 7

What type of heterocycle is found in guanine?
   
   
   
  A)
  purine
  B)
  pyrimidine
  C)
  pyridine
  D)
  quinoline
  E)
  oxazole

Question 8

To what family of heterocyclic compounds do both serotonin and tryptophan belong?
   
   
   
  A)
  imidazole
  B)
  oxazole
  C)
  thiazole
  D)
  indole
  E)
  pyridazine

Question 9

The name of the heterocycle below is:
   
   
   
  A)
  pyrrole
  B)
  furan
  C)
  thiophene
  D)
  pyryllium
  E)
  phenol

Question 10

The name of the heterocycle below is:
   
   
   
  A)
  pyrrole
  B)
  furan
  C)
  thiophene
  D)
  pyryllium
  E)
  phenol

Question 11

The heterocycle cytosine, found in nucleic acids, is an example of a:
  A)
  purine
  B)
  pyrimidine
  C)
  pyridine
  D)
  piperidine
  E)
  pyrazine

[hramirez205]

Answer to Question 1

b

Answer to Question 2

d

Answer to Question 3

a

Answer to Question 4

d

Answer to Question 5

c

Answer to Question 6

d

Answer to Question 7

a

Answer to Question 8

d

Answer to Question 9

c

Answer to Question 10

a

Answer to Question 11

b

[sammy]

YES! Correct, THANKS for helping me on my review

[samiel-sayed]

Thanks for the timely response, appreciate it