Question 1

Which reagent might serve as the basis for a simple chemical test that would distinguish between 5$\infty$-cholest-1-en-3-one and 5$\infty$-cholestan-3-one?

Accepted Answer

A)  Ag(NH3)2+ 
B)  CrO3/H2SO4 
C)  Br2/CCl4 
D)  NaOH/H2O 
E)  C6H5NHNH2 
A)  Ag(NH3)2+ 
B)  CrO3/H2SO4 
C)  Br2/CCl4 
D)  NaOH/H2O 
E)  C6H5NHNH2

Question 2

Which of the following statements regarding triacylglycerols is not true?

Accepted Answer

A)  They undergo alkaline hydrolysis to yield soaps. 
B)  They are liquid if they have alkene bonds. 
C)  They are solid if they do not have alkene bonds. 
D)  Some can be hydrogenated. 
E)  They are soluble in water. 
A)  They undergo alkaline hydrolysis to yield soaps. 
B)  They are liquid if they have alkene bonds. 
C)  They are solid if they do not have alkene bonds. 
D)  Some can be hydrogenated. 
E)  They are soluble in water.

Question 3

When natural rubber is heated with sulfur,a reaction takes place that produces _____________ between the polymer chains.This process is known as _____________.

Accepted Answer

cross-link

Question 4

What products would be obtained from the ozonolysis of zingiberine,found in the oil of ginger?

Accepted Answer

The answer of What products would be obtained from the...

Question 5

The product of the following reaction sequence may be described as?

Accepted Answer

A)  Alkoxyalkane 
B)  Alkyl alkanoate 
C)  Alkyl alkenoate 
D)  Acyl glycerol 
E)  Acyl Alkane 
A)  Alkoxyalkane 
B)  Alkyl alkanoate 
C)  Alkyl alkenoate 
D)  Acyl glycerol 
E)  Acyl Alkane

Question 6

How could you synthesize stearolic acid,CH3(CH2)7C≡C(CH2)7COOH from oleic acid,CH3(CH2)7CH=CH(CH2)7COOH? Specify stoichiometric details,providing a brief explanation of your rationale.

Accepted Answer

Question 7

Which of the following compounds would be most likely to be found in nature? (Hint: recall the isoprene rule. )

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  V 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  V

Question 8

Which type of lipid gives the following products on saponification? HOCH2CHOHCH2OH RCO2¯ R'CO2¯ PO43¯   [HOCH2CH2N(CH3)3]+OH -

Accepted Answer

A)  Fat 
B)  Wax 
C)  Lecithin 
D)  Cephalin 
E)  Plasmalogen 
A)  Fat 
B)  Wax 
C)  Lecithin 
D)  Cephalin 
E)  Plasmalogen

Question 9

There are three major classes of sex hormones:
a.female sex hormones [or ____________]
b.male sex hormones [or ____________]
c.pregnancy hormones [or ______________]

Accepted Answer

a.estrogen

Question 10

Which of these is a detergent?

Accepted Answer

A)  CH3(CH2)16COO-Na+ 
B)  [CH3(CH2)14COO-]2Ca+2 
C)  CH3(CH2)10CH2SO3-Na+ 
D)  HOCH2CHOHCH2OH 
E)  CH3(CH2)14CH2SH 
A)  CH3(CH2)16COO-Na+ 
B)  [CH3(CH2)14COO-]2Ca+2 
C)  CH3(CH2)10CH2SO3-Na+ 
D)  HOCH2CHOHCH2OH 
E)  CH3(CH2)14CH2SH

Question 11

Most waxes,commonly found as protective coatings on skin,fur,hair,leaves,fruits,etc. ,are ____________.

Accepted Answer

Esters of long chain

Question 12

The reaction of cholesterol with dilute aqueous KMnO4 at 0-5°C produces which of these compounds (A and B rings only shown)?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  V 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  V

Question 13

Which compound below does not obey the isoprene rule?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  V 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  V

Question 14

Which of the following statements regarding triacylglycerols is not true?

Accepted Answer

A)  Some undergo autooxidation with oxygen from air. 
B)  They are solid if they do not have alkene bonds. 
C)  They form lipid bilayers. 
D)  They form micelles in water. 
E)  Two of the above are false statements. 
A)  Some undergo autooxidation with oxygen from air. 
B)  They are solid if they do not have alkene bonds. 
C)  They form lipid bilayers. 
D)  They form micelles in water. 
E)  Two of the above are false statements.

Question 15

Suggest a reasonable synthetic strategy for the synthesis of N,N-dimethylstearamide ,CH3(CH2)16CON(CH3)2 from oleic acid,cis 9-octadecenoic acid

Accepted Answer

i)H₂,Ni;ii)

Question 16

The final product of the following reaction sequence would be:,

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  V 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  V

Question 17

Which of the following would serve as the basis for a simple chemical test that would distinguish between stearic acid and oleic acid?

Accepted Answer

A)  NaOH/H2O 
B)  NaHCO3/H2O 
C)  HCl/H2O 
D)  Ag(NH3)2+ 
E)  Br2/CCl4 
A)  NaOH/H2O 
B)  NaHCO3/H2O 
C)  HCl/H2O 
D)  Ag(NH3)2+ 
E)  Br2/CCl4

Question 18

Which of the following is a phosphatidic acid?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  V 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  V

Question 19

The product of the following reaction sequence is nervonic acid.What is the structure of nervonic acid?

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
E) 
  
A) 
  
B) 
  
C) 
  
D) 
  
E)

Question 20

Which of the following might be helpful in distinguishing between oleic acid and linoleic acid?

Accepted Answer

A)  Examine the stoichiometry of the reaction with NaOH/H2O 
B)  Examine the stoichiometry of complete catalytic hydrogenation. 
C)  Examine products obtained after subjecting the sample to catalytic hydrogenation 
D)  Examine products obtained after subjecting the sample to : i)O3,CH2Cl2;ii)Zn,CH3CO2H 
E)  Two of the above 
A)  Examine the stoichiometry of the reaction with NaOH/H2O 
B)  Examine the stoichiometry of complete catalytic hydrogenation. 
C)  Examine products obtained after subjecting the sample to catalytic hydrogenation 
D)  Examine products obtained after subjecting the sample to : i)O3,CH2Cl2;ii)Zn,CH3CO2H 
E)  Two of the above

Exam 23: Lipids

Which reagent might serve as the basis for a simple chemical test that would distinguish between 5 ∞\infty∞ -cholest-1-en-3-one and 5 ∞\infty∞ -cholestan-3-one?

Which of the following statements regarding triacylglycerols is not true?

When natural rubber is heated with sulfur,a reaction takes place that produces _____________ between the polymer chains.This process is known as _____________.

What products would be obtained from the ozonolysis of zingiberine,found in the oil of ginger?

The product of the following reaction sequence may be described as?

How could you synthesize stearolic acid,CH3(CH2)7C≡C(CH2)7COOH from oleic acid,CH3(CH2)7CH=CH(CH2)7COOH? Specify stoichiometric details,providing a brief explanation of your rationale.

Which of the following compounds would be most likely to be found in nature? (Hint: recall the isoprene rule. )

Which type of lipid gives the following products on saponification? HOCH2CHOHCH2OH RCO2¯ R'CO2¯ PO43¯ [HOCH2CH2N(CH3)3]+OH -

There are three major classes of sex hormones: a.female sex hormones [or ____________] b.male sex hormones [or ____________] c.pregnancy hormones [or ______________]

Which of these is a detergent?

Most waxes,commonly found as protective coatings on skin,fur,hair,leaves,fruits,etc. ,are ____________.

The reaction of cholesterol with dilute aqueous KMnO4 at 0-5°C produces which of these compounds (A and B rings only shown)?

Which compound below does not obey the isoprene rule?

Which of the following statements regarding triacylglycerols is not true?

Suggest a reasonable synthetic strategy for the synthesis of N,N-dimethylstearamide ,CH3(CH2)16CON(CH3)2 from oleic acid,cis 9-octadecenoic acid

The final product of the following reaction sequence would be:,

Which of the following would serve as the basis for a simple chemical test that would distinguish between stearic acid and oleic acid?

Which of the following is a phosphatidic acid?

The product of the following reaction sequence is nervonic acid.What is the structure of nervonic acid?

Which of the following might be helpful in distinguishing between oleic acid and linoleic acid?

Carbon Compounds and Chemical Bonds

Representative Carbon Compounds: Functional Groups, Intermolecular Forces, and Infrared Ir Spectroscopy

An Introduction to Organic Reactions: Acids and Bases

Alkanes: Nomenclature, Conformational Analysis, and an Introduction to Synthesis

Stereochemistry: Chiral Molecules

Ionic Reactions - Nucleophilic Substitution and Elimination Reactions of Alkyl Halides

Alkenes and Alkynes I: Properties and Synthesis, Elimination Reactions of Alkyl Halides

Alkenes and Alkynes Ii: Addition Reactions

Nuclear Magnetic Resonance and Mass Spectrometry: Tools for Structure Determination

Radical Reactions

Alcohols and Ethers

Alcohols From Carbonyl Compounds Oxidation-Reduction and Organometallic Compounds

Conjugated Unsaturated Systems

Aromatic Compounds

Reactions of Aromatic Compounds

Aldehydes and Ketones I Nucleophilic Addition to the Carbonyl Group

Aldehydes and Ketones Ii Aldol Reactions

Carboxylic Acids and Their Derivatives Nucleophilic Addition - Elimination at the Acyl Carbon

Synthesis and Reactions of Beta-Dicarbonyl Compounds: More Chemistry of Enolate Ions

Amines

Phenols and Aryl Halides: Nucleophilic Aromatic Substitution

Carbohydrates

Amino Acids and Proteins

Nucleic Acids and Protein Synthesis

Filters

Which reagent might serve as the basis for a simple chemical test that would distinguish between 5 $\infty$ -cholest-1-en-3-one and 5 $\infty$ -cholestan-3-one?

When natural rubber is heated with sulfur,a reaction takes place that produces _ between the polymer chains.This process is known as _.

How could you synthesize stearolic acid,CH₃(CH₂)₇C≡C(CH₂)₇COOH from oleic acid,CH₃(CH₂)₇CH=CH(CH₂)₇COOH? Specify stoichiometric details,providing a brief explanation of your rationale.

Which type of lipid gives the following products on saponification? HOCH₂CHOHCH₂OH RCO₂¯ R'CO₂¯ PO₄³¯ [HOCH₂CH₂N(CH₃)₃]⁺OH ^-

There are three major classes of sex hormones: a.female sex hormones [or ] b.male sex hormones [or ] c.pregnancy hormones [or __]

The reaction of cholesterol with dilute aqueous KMnO₄ at 0-5°C produces which of these compounds (A and B rings only shown)?

Suggest a reasonable synthetic strategy for the synthesis of N,N-dimethylstearamide ,CH₃(CH₂)₁₆CON(CH₃)₂ from oleic acid,cis 9-octadecenoic acid