Which of the following fatty acids has the lowest melting point? ...

[lindiwe]

Which of the following fatty acids has the lowest melting point?
  A)
 
  B)
 
  C)
 
  D)
 
  E)
 

Question 2

The last step in the following isomerization is:
   
   
   
 
   
  A)
  protonation at C-3 or C-6.
  B)
  protonation at C-2 or C-7.
  C)
  loss of a proton from C-3 or C-6.
  D)
  loss of a proton from C-2 or C-7.
  E)
  formation of a bond between C-6 and C-2.

Question 3

The first step in the following reaction is:
   
   
   
 
   
  A)
  protonation at C-3 or C-6.
  B)
  protonation at C-2 or C-7.
  C)
  loss of a proton from C-3 or C-6.
  D)
  loss of a proton from C-2 or C-7.
  E)
  formation of a bond between C-6 and C-2.

Question 4

A reaction sequence that would accomplish the following transformation is:
   
   
   
 
   
  A)
  1. CH₃(CH₂)₉CCH(CH₃)MgBr 2. H₂SO₄, SO₃ 3. NaOH
  B)
  1. CH₃(CH₂)₈COCl, AlCl₃ 2. H₂SO₄, SO₃ 3. CH₃MgBr, H₃O⁺ 4. H₂, Pd/C 5. NaOH
  C)
  1. H₂SO₄, SO₃ 2. CH₃(CH₂)₉CH=CH₂, HF 3. NaOH
  D)
  1. CH₃(CH₂)₉CH=CH₂, HF 2. H₂SO₄, SO₃ 3. NaOH
  E)
  1. H₂SO₄, SO₃ 2. CH₃(CH₂)₉CH(CH₃)MgBr 3. NaOH

Question 5

What reagent can be used to reduce testosterone to a secondary alcohol?
 
  A)
  HCl
  B)
  NH₃
  C)
  CH₃CO₃H
  D)
  NaBH₄
  E)
  Ag₂O

Question 6

What class of compound is produced when acetic anhydride reacts with cholesterol?
 
  A)
  amide
  B)
  ester
  C)
  ketone
  D)
  amine
  E)
  ether

Question 7

What mechanism is involved in the formation of a cationic detergent shown below?
   
   
   
   
 
   
  A)
  S_N1
  B)
  S_N2
  C)
  nucleophilic acyl substitution
  D)
  nucleophilic acyl addition
  E)
  free radical addition

Question 8

Which of the following triglycerides affords three moles of the same saturated fatty acid upon saponification followed by protonation?
   
   
   
   
   
   
  A)
  I
  B)
  II
  C)
  III
  D)
  IV
  E)
  II and IV

Question 9

On saponification with sodium hydroxide, which fat or oil will yield two moles of the sodium salt of stearic acid and one mole of the salt of oleic acid?
   
   
   
 
   
  A)
  I
  B)
  II
  C)
  III
  D)
  IV
  E)
  V

Question 10

What reagent will convert an unsaturated glyceride to a saturated glyceride?
  A)
  Zn/H
  B)
  LiNH₂
  C)
  NH₃
  D)
  H₂, Ni
  E)
  NaOBr

[scottmt]

Answer to Question 1

e

Answer to Question 2

c

Answer to Question 3

a

Answer to Question 4

d

Answer to Question 5

d

Answer to Question 6

b

Answer to Question 7

b

Answer to Question 8

c

Answer to Question 9

b

Answer to Question 10

d

[lindiwe]

Excellent

[olderstudent]

Wow, this really help