Question 1

What are heterocyclic compounds?

Accepted Answer

A)  They are cyclic compounds in which carbon has one or more substituents that are neither hydrogen or another carbon atom 
B)  They are cyclic compounds in which two or more carbon rings are connected with C-C bons (for example biphenyl) 
C)  They are cyclic compounds in which carbon ring is connected to another ring not containing carbon atoms 
D)  They are cyclic compounds in which one or more atoms are not carbon atoms 
E)  They are cyclic compounds that can have more than one stable conformation 
A)  They are cyclic compounds in which carbon has one or more substituents that are neither hydrogen or another carbon atom 
B)  They are cyclic compounds in which two or more carbon rings are connected with C-C bons (for example biphenyl) 
C)  They are cyclic compounds in which carbon ring is connected to another ring not containing carbon atoms 
D)  They are cyclic compounds in which one or more atoms are not carbon atoms 
E)  They are cyclic compounds that can have more than one stable conformation

Question 2

An alcohol of formula C3H8O in which there are only three different kinds of hydrogens is:

Accepted Answer

A)  2-propanol 
B)  1-propanol 
C)  cyclopropanol 
D)  ethanol 
E)  CH3CH2CH2OH 
A)  2-propanol 
B)  1-propanol 
C)  cyclopropanol 
D)  ethanol 
E)  CH3CH2CH2OH

Question 3

Give the condensed structural formula for 3-methyl-3-hexene.

Accepted Answer

A)  CH3CH2CH(CH3)CH=CHCH3 
B)  CH3CH2C(CH3)2CH=CHCH3 
C)  (CH3)3CCH=CHCH3 
D)  CH3CH2C(CH3)=CHCH2CH3 
E)  (CH3)6CCH2CH=CH2 
A)  CH3CH2CH(CH3)CH=CHCH3 
B)  CH3CH2C(CH3)2CH=CHCH3 
C)  (CH3)3CCH=CHCH3 
D)  CH3CH2C(CH3)=CHCH2CH3 
E)  (CH3)6CCH2CH=CH2

Question 4

The IUPAC name of tert-butyl group is:

Accepted Answer

A)  1,1-dimethylethyl 
B)  1,1-dimethylethane 
C)  1,2-dimethylethyl 
D)  1-methylpropyl 
E)  2-methylpropyl 
A)  1,1-dimethylethyl 
B)  1,1-dimethylethane 
C)  1,2-dimethylethyl 
D)  1-methylpropyl 
E)  2-methylpropyl

Question 5

Give the name for CH3CH=CHCH3.

Accepted Answer

A)  3-butene 
B)  2-butene 
C)  2-propene 
D)  2-pentene 
E)  2-butane 
A)  3-butene 
B)  2-butene 
C)  2-propene 
D)  2-pentene 
E)  2-butane

Question 6

You found an organic compound containing chiral carbon atom with the following four substituents: HC≡C-, Cl-, O=C- and H2C=CH-. What would be the correct order of their priorities?

Accepted Answer

A)  HC≡C- > O=C- > Cl- > H2C=CH- 
B)  Cl- > HC≡C- > O=C- > H2C=CH- 
C)  Cl- > O=C- > HC≡C- > H2C=CH- 
D)  Cl- > O=C-> H2C=CH- > HC≡C- 
E)  O=C- > Cl- > HC≡C- > H2C=CH- 
A)  HC≡C- > O=C- > Cl- > H2C=CH- 
B)  Cl- > HC≡C- > O=C- > H2C=CH- 
C)  Cl- > O=C- > HC≡C- > H2C=CH- 
D)  Cl- > O=C-> H2C=CH- > HC≡C- 
E)  O=C- > Cl- > HC≡C- > H2C=CH-

Question 7

Which of the following compounds is(are) chiral?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  I + II 
E)  II + III 
A)  I 
B)  II 
C)  III 
D)  I + II 
E)  II + III

Question 8

Which compound is the lowest boiling?

Accepted Answer

A)  methane 
B)  ethene 
C)  ethane 
D)  cyclopropane 
E)  ethyne 
A)  methane 
B)  ethene 
C)  ethane 
D)  cyclopropane 
E)  ethyne

Question 9

Choose the INCORRECT statement.

Accepted Answer

A)  Hydrocarbons are compounds of carbon and hydrogen. 
B)  Skeletal isomerism is also called chain isomerism. 
C)  Isomers have the same chemical formula but differ with respect to the arrangement of atoms. 
D)  Saturated hydrocarbons have only single bonds connecting each atom. 
E)  Organic compounds can be obtained only from living tissue. 
A)  Hydrocarbons are compounds of carbon and hydrogen. 
B)  Skeletal isomerism is also called chain isomerism. 
C)  Isomers have the same chemical formula but differ with respect to the arrangement of atoms. 
D)  Saturated hydrocarbons have only single bonds connecting each atom. 
E)  Organic compounds can be obtained only from living tissue.

Question 10

Give the condensed structural formula for 2-butanone.

Accepted Answer

A)  HCOCH2CH2CH3 
B)  CH3CH2CH2CHO 
C)  HCOCH2CH2CHO 
D)  CH3CH2COCH2CH3 
E)  CH3COCH2CH3 
A)  HCOCH2CH2CH3 
B)  CH3CH2CH2CHO 
C)  HCOCH2CH2CHO 
D)  CH3CH2COCH2CH3 
E)  CH3COCH2CH3

Question 11

Find the structure for 2,3,5,7-tetramethyloctane

Accepted Answer

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

Question 12

Choose the INCORRECT statement.

Accepted Answer

A)  CH3CH2CH2CH2CH2NH2 is an amine. 
B)  CH3CH2OCH2CH2CH3 is an ether. 
C)  CH3CH2CH2CH2CH2OH is an alcohol. 
D)  O=CH3CH2CH2CH2CH is a ketone. 
E)  CH3CH2CH2CH=CH2 is an alkene. 
A)  CH3CH2CH2CH2CH2NH2 is an amine. 
B)  CH3CH2OCH2CH2CH3 is an ether. 
C)  CH3CH2CH2CH2CH2OH is an alcohol. 
D)  O=CH3CH2CH2CH2CH is a ketone. 
E)  CH3CH2CH2CH=CH2 is an alkene.

Question 13

To produce an ether from methanol, one can use:

Accepted Answer

A)  reacting alkene with water in a presence of a strong mineral acid 
B)  alcohol and concentrated H2SO4 
C)  KOH in alcohol 
D)  Cu, heat 
E)  reacting alcohol with sodium 
A)  reacting alkene with water in a presence of a strong mineral acid 
B)  alcohol and concentrated H2SO4 
C)  KOH in alcohol 
D)  Cu, heat 
E)  reacting alcohol with sodium

Question 14

Which class of compounds is the least reactive?

Accepted Answer

A)  ethers 
B)  alcohols 
C)  ketones 
D)  alkyl halides 
E)  aldehydes 
A)  ethers 
B)  alcohols 
C)  ketones 
D)  alkyl halides 
E)  aldehydes

Question 15

Name the functional groups in the molecule below:

Accepted Answer

A)  ester, ether, amine, keto 
B)  carboxyl, ether, amine, keto 
C)  ester, ether, amine, aldehyde 
D)  ester, ether, amide, aldehyde 
E)  ester, carboxyl, amine, keto 
A)  ester, ether, amine, keto 
B)  carboxyl, ether, amine, keto 
C)  ester, ether, amine, aldehyde 
D)  ester, ether, amide, aldehyde 
E)  ester, carboxyl, amine, keto

Question 16

Find the correct stereochemistries for the following four alkenes:

Accepted Answer

A)  A is Z, B is Z, C is E, D is E 
B)  A is Z, B is E, C is Z, D is E 
C)  A is E, B is E, C is Z, D is E 
D)  A is E, B is E, C is Z, D is Z 
E)  A is Z, B is Z, C is E, D is Z 
A)  A is Z, B is Z, C is E, D is E 
B)  A is Z, B is E, C is Z, D is E 
C)  A is E, B is E, C is Z, D is E 
D)  A is E, B is E, C is Z, D is Z 
E)  A is Z, B is Z, C is E, D is Z

Question 17

Which of the following is the most soluble in water?

Accepted Answer

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

Question 18

Cis-trans isomerism is a type of isomerism generally known as stereoisomerism.

Accepted Answer

A) True 
 B)False

Question 19

What is the IUPAC name for the following molecule?

Accepted Answer

A)  2-bromo-4-isopropyl-3-methylbutane 
B)  2-bromo-3,5-dimethylhexane 
C)  3,5-dimethyl-2-bromohexane 
D)  2-bromo-3-methyl-4-propylbutane 
E)  2-bromo-5,5,3-trimethylpentane 
A)  2-bromo-4-isopropyl-3-methylbutane 
B)  2-bromo-3,5-dimethylhexane 
C)  3,5-dimethyl-2-bromohexane 
D)  2-bromo-3-methyl-4-propylbutane 
E)  2-bromo-5,5,3-trimethylpentane

Question 20

Choose the INCORRECT statement.

Accepted Answer

A)  Latin prefixes provide information on the numbers of C atoms in a chain. 
B)  An alkane group used as a side chain group is called an alkyl group. 
C)  Di, tri, and tetra can be used to designate the number of side chain groups. 
D)  Positional isomers differ in the position on the main chain of the side chain group. 
E)  Functional groups are distinctive groupings of one or more atoms. 
A)  Latin prefixes provide information on the numbers of C atoms in a chain. 
B)  An alkane group used as a side chain group is called an alkyl group. 
C)  Di, tri, and tetra can be used to designate the number of side chain groups. 
D)  Positional isomers differ in the position on the main chain of the side chain group. 
E)  Functional groups are distinctive groupings of one or more atoms.

Exam 26: Structures of Organic Compounds

What are heterocyclic compounds?

An alcohol of formula C3H8O in which there are only three different kinds of hydrogens is:

Give the condensed structural formula for 3-methyl-3-hexene.

The IUPAC name of tert-butyl group is:

Give the name for CH3CH=CHCH3.

You found an organic compound containing chiral carbon atom with the following four substituents: HC≡C-, Cl-, O=C- and H2C=CH-. What would be the correct order of their priorities?

Which of the following compounds is(are) chiral?

Which compound is the lowest boiling?

Choose the INCORRECT statement.

Give the condensed structural formula for 2-butanone.

Find the structure for 2,3,5,7-tetramethyloctane

Choose the INCORRECT statement.

To produce an ether from methanol, one can use:

Which class of compounds is the least reactive?

Name the functional groups in the molecule below:

Find the correct stereochemistries for the following four alkenes:

Which of the following is the most soluble in water?

Cis-trans isomerism is a type of isomerism generally known as stereoisomerism.

What is the IUPAC name for the following molecule?

Choose the INCORRECT statement.

Matter - Its Properties and Measurement

Atoms and the Atomic Theory

Chemical Compounds

Chemical Reactions

Introduction to Reactions in Aqueous Solutions

Gases

Thermochemistry

Electrons in Atoms

The Periodic Table and Some Atomic Properties

Chemical Bonding I: Basic Concepts

Chemical Bonding II: Additional Aspects

Intermolecular Forces: Liquids and Solids

Solutions and Their Physical Properties

Chemical Kinetics

Principles of Chemical Equilibrium

Acids and Bases

Additional Aspects of Acid-Base Equilibria

Solubility and Complex-Ion Equilibria

Spontaneous Change: Entropy and Free Energy

Electrochemistry

Main Group Elements I: Groups 1, 2, 13, and 14

Main Group Elements II: Groups 18, 17, 16, 15, and Hydrogen

The Transition Elements

Complex Ions and Coordination Compounds

Nuclear Chemistry 1-41

Reactions of Organic Compounds

Chemistry of the Living State

Filters

An alcohol of formula C₃H₈O in which there are only three different kinds of hydrogens is:

Give the name for CH₃CH=CHCH₃.

You found an organic compound containing chiral carbon atom with the following four substituents: HC≡C-, Cl-, O=C- and H₂C=CH-. What would be the correct order of their priorities?