Question 1

According to the IUPAC convention for chemical naming,which part of a hydrocarbon is selected as the main chain for a hydrocarbon chain?

Accepted Answer

A)  the most highly branched chain
B)  the shortest chain
C)  the longest chain drawn in a straight line
D)  the longest continuous chain,regardless of bends
E)  the chain with the most substituted carbons in itF) C) and D)
G) B) and D)

Question 2

All of the carbon-carbon bonds in benzene are ________.

Accepted Answer

A)  composed of only two types,single and double
B)  identical
C)  double bonds
D)  single bonds
E)  circular bondsF) B) and D)
G) D) and E) B

Question 3

Choose the type of compound from Column 2 that best matches each item in Column 1.
- -CH  CH-

Accepted Answer

A)  cycloalkene
B)  cycloalkane
C)  alkene
D)  alkane
E)  alkyneF) B) and C)
G) All of the above

Question 4

Isomers have the same molecular formula.

Accepted Answer

A) True 
 B)False

Question 5

The complete combustion of 1 mole of pentane H12 ,will require how many moles of oxygen, O2 ?

Accepted Answer

A)  1 mole
B)  2 moles
C)  5 moles
D)  6 moles
E)  8 molesF) B) and C)
G) A) and B)

Question 6

The hydrogenation of an alkene gives a(n) ________.

Accepted Answer

A)  alkane
B)  alkene
C)  alkyne
D)  benzene
E)  isomerF) B) and D)
G) A) and E)

Question 7

What is the IUPAC name for a ten-carbon continuous-chain alkane?

Accepted Answer

A)  hexane
B)  heptane
C)  octane
D)  nonane
E)  decaneF) B) and E)
G) B) and D)

Question 8

An organic compound composed of carbon and hydrogen connected only by single bonds is an ________.

Accepted Answer

A)  alkane
B)  alkene
C)  alkyne
D)  aromatic compound
E)  alcoholF) None of the above
G) C) and D)

Question 9

What is the IUPAC name of

Accepted Answer

A)  hexane
B)  dimethylbutane
C)  3,3-dimethylbutane
D)  2,2-dimethylbutane
E)  2-dimethylbutaneF) A) and B)
G) A) and D)

Question 10

What is the name for a one-carbon alkyl substituent?

Accepted Answer

A)  methyl
B)  ethyl
C)  propyl
D)  butyl
E)  pentylF) C) and E)
G) B) and C)

Question 11

Most organic compounds are flammable.

Accepted Answer

A) True 
 B)False  True

Question 12

Shampoos,perfumes,and plastics are organic compounds.

Accepted Answer

A) True 
 B)False

Question 13

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-ethylhexaneF) A) and D)
G) B) and E)

Question 14

All polycyclic aromatic compounds cause cancer.

Accepted Answer

A) True 
 B)False

Question 15

What is the IUPAC name of this compound?

Accepted Answer

A)  2,2-dimethylpentane
B)  2,4-dimethylpentane
C)  heptane
D)  2-methylhexane
E)  1,1,3-trimethylbutaneF) C) and E)
G) A) and C) B

Question 16

What is the IUPAC name of this compound?

Accepted Answer

A)  hexane
B)  heptane
C)  octane
D)  butane
E)  pentaneF) A) and E)
G) A) and D)

Question 17

Which of the following is not typical of most hydrocarbons?

Accepted Answer

A)  high melting point
B)  poor solubility in water
C)  low boiling point
D)  covalent bonding
E)  high flammabilityF) B) and E)
G) A) and B)

Question 18

Octane is a seven carbon linear alkane.

Accepted Answer

A) True 
 B)False

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)  octaneF) A) and E)
G) A) and B)

Question 20

In the three-dimensional structure of methane,  ,the hydrogen atoms attached to a carbon atom are aligned ________.

Accepted Answer

A)  in a straight line
B)  at the corners of a square
C)  at the corners of a tetrahedron
D)  at the corners of a rectangle
E)  at the corners of a cubeF) C) and E)
G) A) and D)

Exam 11: Introduction to Organic Chemistry: Hydrocarbons

According to the IUPAC convention for chemical naming,which part of a hydrocarbon is selected as the main chain for a hydrocarbon chain?

Correct AnswerverifiedShow Answer

All of the carbon-carbon bonds in benzene are ________.

Correct AnswerverifiedB

Choose the type of compound from Column 2 that best matches each item in Column 1. - -CH CH-

Correct AnswerverifiedShow Answer

Isomers have the same molecular formula.

Correct AnswerverifiedShow Answer

The complete combustion of 1 mole of pentane H12 ,will require how many moles of oxygen, O2 ?

Correct AnswerverifiedShow Answer

The hydrogenation of an alkene gives a(n) ________.

Correct AnswerverifiedShow Answer

What is the IUPAC name for a ten-carbon continuous-chain alkane?

Correct AnswerverifiedShow Answer

An organic compound composed of carbon and hydrogen connected only by single bonds is an ________.

Correct AnswerverifiedShow Answer

What is the IUPAC name of

Correct AnswerverifiedShow Answer

What is the name for a one-carbon alkyl substituent?

Correct AnswerverifiedShow Answer

Most organic compounds are flammable.

Correct AnswerverifiedTrue

Shampoos,perfumes,and plastics are organic compounds.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

All polycyclic aromatic compounds cause cancer.

Correct AnswerverifiedShow Answer

What is the IUPAC name of this compound?

Correct AnswerverifiedB

What is the IUPAC name of this compound?

Correct AnswerverifiedShow Answer

Which of the following is not typical of most hydrocarbons?

Correct AnswerverifiedShow Answer

Octane is a seven carbon linear alkane.

Correct AnswerverifiedShow Answer

What is the IUPAC name for this alkane?

Correct AnswerverifiedShow Answer

In the three-dimensional structure of methane, ,the hydrogen atoms attached to a carbon atom are aligned ________.

Correct AnswerverifiedShow Answer

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B

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The complete combustion of 1 mole of pentane H₁₂ ,will require how many moles of oxygen, O₂ ?

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True

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

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B

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