Question 1

The structural formula of benzene is often represented as a

Accepted Answer

A) ring of five carbon atoms. 
B) ring of six carbon atoms with six double bonds. 
C) ring of six carbon atoms with a circle in the center. 
D) cycloalkane. 
E) cycloalkyne. 
A) ring of five carbon atoms. 
B) ring of six carbon atoms with six double bonds. 
C) ring of six carbon atoms with a circle in the center. 
D) cycloalkane. 
E) cycloalkyne.

Question 2

What is the IUPAC name for the following compound?

Accepted Answer

A) 1-pentene 
B) 2-pentene 
C) 3-pentene 
D) 1-methylbutene 
E) 2-pentyne 
A) 1-pentene 
B) 2-pentene 
C) 3-pentene 
D) 1-methylbutene 
E) 2-pentyne

Question 3

A formula that shows the arrangement of all bonds in a molecule is called a(n)

Accepted Answer

A) molecular formula. 
B) complete structural formula. 
C) condensed structural formula. 
D) condensed molecular formula. 
E) isomeric formula. 
A) molecular formula. 
B) complete structural formula. 
C) condensed structural formula. 
D) condensed molecular formula. 
E) isomeric formula.

Question 4

VSEPR theory predicts that simple carbon compounds will form bonds that are

Accepted Answer

A) as far apart as possible. 
B) as close together as possible. 
C) arranged in a straight line. 
D) pointed to the corners of a cube. 
E) pointed to the corners of a triangle. 
A) as far apart as possible. 
B) as close together as possible. 
C) arranged in a straight line. 
D) pointed to the corners of a cube. 
E) pointed to the corners of a triangle.

Question 5

An alkyne containing three carbons is named propyne.

Accepted Answer

A) True 
 B)False

Question 6

What is the condensed structural formula for the product of the hydrogenation of 2-butene using a platinum catalyst?

Accepted Answer

A) CH₃-CH= CH-CH₃ 
B)  
  
C) CH₃-CH2-CH2-CH₃ 
D) 
  
E) 
  
A) CH₃-CH= CH-CH₃ 
B)  
  
C) CH₃-CH2-CH2-CH₃ 
D) 
  
E)

Question 7

An alkyne is always a carbon compound that contains a ________ bond.

Accepted Answer

A) single 
B) double 
C) triple 
D) aromatic 
E) hydrogen 
A) single 
B) double 
C) triple 
D) aromatic 
E) hydrogen

Question 8

What is(are) the product(s) of the complete combustion of any hydrocarbon?

Accepted Answer

A) CO only 
B) CO2 only 
C) CO + H2O 
D) CO2 + H2O 
E) H2O only 
A) CO only 
B) CO2 only 
C) CO + H2O 
D) CO2 + H2O 
E) H2O only

Question 9

Most organic compounds are flammable.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following compounds could have the molecular formula C7H16?

Accepted Answer

A) hexane 
B) pentane 
C) 2-methylheptane 
D) 2,3-dimethylpentane 
E) 3-ethylhexane 
A) hexane 
B) pentane 
C) 2-methylheptane 
D) 2,3-dimethylpentane 
E) 3-ethylhexane

Question 11

What is the molecular formula of benzene?

Accepted Answer

A) C6H₄ 
B) C6H6 
C) C6H8 
D) C6H10 
E) C6H12 
A) C6H₄ 
B) C6H6 
C) C6H8 
D) C6H10 
E) C6H12

Question 12

A molecule containing a carbon atom bonded to four chlorine atoms has the shape of a

Accepted Answer

A) triangle. 
B) rhombus. 
C) square. 
D) cube. 
E) tetrahedron. 
A) triangle. 
B) rhombus. 
C) square. 
D) cube. 
E) tetrahedron.

Question 13

What is the major product of the reaction shown below?

Accepted Answer

A)  
  
B) 
  
C) CH₃- CH2 - CH2 - CH2 OH 
D)  
  
E)    
A)  
  
B) 
  
C) CH₃- CH2 - CH2 - CH2 OH 
D)  
  
E)

Question 14

The first four linear alkyl substituent groups are named methyl, ethyl, propyl, and butyl.

Accepted Answer

A) True 
 B)False

Question 15

Hydrocarbons are the primary constituents of

Accepted Answer

A) drugs. 
B) food flavors. 
C) fossil fuels. 
D) fruit juices. 
E) disinfectants. 
A) drugs. 
B) food flavors. 
C) fossil fuels. 
D) fruit juices. 
E) disinfectants.

Question 16

When naming an alkane, the main chain is the longest continuous carbon chain regardless of bends.

Accepted Answer

A) True 
 B)False

Question 17

In a molecule with a symmetrical arrangement of polar bonds, the overall molecule is

Accepted Answer

A) highly polar. 
B) somewhat polar. 
C) nonpolar. 
D) reverse polar. 
E) strongly reverse polar. 
A) highly polar. 
B) somewhat polar. 
C) nonpolar. 
D) reverse polar. 
E) strongly reverse polar.

Question 18

What type of compound is CH₃ -CH2-CH₃ ?

Accepted Answer

A) alkane 
B) branched alkane 
C) cycloalkane 
D) haloalkane 
E) isomer 
A) alkane 
B) branched alkane 
C) cycloalkane 
D) haloalkane 
E) isomer

Question 19

What is the IUPAC name for this alkane?

Accepted Answer

A) 2-ethyl-3-methylpentane 
B) 4-ethyl-3-methylpentane 
C) 3, 4-dimethylhexane 
D) 2, 3-diethylbutane 
E) octane 
A) 2-ethyl-3-methylpentane 
B) 4-ethyl-3-methylpentane 
C) 3, 4-dimethylhexane 
D) 2, 3-diethylbutane 
E) octane

Question 20

Most prescription drugs are organic molecules.

Accepted Answer

A) True 
 B)False

Exam 12: Introduction to Organic Chemistry: Hydrocarbons

The structural formula of benzene is often represented as a

What is the IUPAC name for the following compound?

A formula that shows the arrangement of all bonds in a molecule is called a(n)

VSEPR theory predicts that simple carbon compounds will form bonds that are

An alkyne containing three carbons is named propyne.

What is the condensed structural formula for the product of the hydrogenation of 2-butene using a platinum catalyst?

An alkyne is always a carbon compound that contains a ________ bond.

What is(are) the product(s) of the complete combustion of any hydrocarbon?

Most organic compounds are flammable.

Which of the following compounds could have the molecular formula C7H16?

What is the molecular formula of benzene?

A molecule containing a carbon atom bonded to four chlorine atoms has the shape of a

What is the major product of the reaction shown below?

The first four linear alkyl substituent groups are named methyl, ethyl, propyl, and butyl.

Hydrocarbons are the primary constituents of

When naming an alkane, the main chain is the longest continuous carbon chain regardless of bends.

In a molecule with a symmetrical arrangement of polar bonds, the overall molecule is

What type of compound is CH₃ -CH2-CH₃ ?

What is the IUPAC name for this alkane?

Most prescription drugs are organic molecules.

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What type of compound is CH₃ -CH₂-CH₃ ?