Question 1

Which of the following is a correct name which corresponds to the common name tert-pentyl alcohol?

Accepted Answer

A)  2,2-Dimethyl-1-propanol
B)  2-Ethyl-2-propanol
C)  2-Methyl-2-butanol
D)  3-Methyl-1-butanol
E)  Methyl tert-butanol

Question 2

The correct IUPAC name for the following compound is:

Accepted Answer

A)  5-(1-pentanolyl) -cyclobutane
B)  5-cyclobutyl-1-pentanol
C)  1-cyclobutyl-5-pentanol
D)  1-(5-pentanolyl) -cyclobutane
E)  none of these choices

Question 3

To determine the parent name for an alkane,we begin by finding the ___.

Accepted Answer

longest co...

Question 4

Chair conformations for cyclohexane systems are always the lowest energy conformation possible.

Accepted Answer

A) True 
 B)False

Question 5

The least stable conformation of butane is:

Accepted Answer

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

Question 6

A compound containing a triple bond between the first two carbons in the chain is called a ___.

Accepted Answer

The answer of A compound containing a triple bond between...

Question 7

What is the index of hydrogen deficiency (or degree of unsaturation) for the drug morphine?

Accepted Answer

A)  6
B)  7
C)  8
D)  9
E)  10

Question 8

What is the index of hydrogen deficiency (or degree of unsaturation) of a compound with the molecular formula of C21H30O5?

Accepted Answer

A)  3
B)  4
C)  5
D)  6
E)  7

Question 9

Which statement(s) is/are true about a molecule with the molecular formula C10H20, that when subjected to catalytic hydrogenation there is no consumption of hydrogen?

Accepted Answer

A)  The molecule has no degrees of unstaturation. 2
B)  There is one degree of unsaturation,which happens to be a pi bond.
C)  There are two degrees of unsaturation where one is a ring and the other is a pi bond.
D)  There is one degree of unsaturation,which happens to be a ring.
E)  None of these choices.

Question 10

What is the index of hydrogen deficiency (or degree of unsaturation) of the following molecule?

Accepted Answer

A)  2
B)  3
C)  4
D)  5
E)  6

Question 11

How many alkanes of formula C7H16 possess a quaternary carbon atom?

Accepted Answer

A)  1
B)  2
C)  3
D)  4
E)  5

Question 12

How many constitutional isomers are possible for the formula C6H14?

Accepted Answer

A)  2
B)  3
C)  4
D)  5
E)  6

Question 13

Select the structure for cis-3-methyl-6-vinylcyclohexene.

Accepted Answer

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

Question 14

What product is formed when 5-chlorocyclohex-3-en-1-ol is reacted with Pd/C and H2?

Accepted Answer

A)  5-chlorocyclohexanol 2
B)  3-chlorocyclohexanol
C)  5-chloro-3-hexanol
D)  2-chloro-4-hexanol
E)  None of these choices.

Question 15

The most stable conformation of trans-1-tert-butyl-3-methylcyclohexane is the one in which:

Accepted Answer

A)  the tert-butyl group is axial and the methyl group is equatorial.
B)  the methyl group is axial and the tert-butyl group is equatorial.
C)  both groups are axial.
D)  both groups are equatorial.
E)  the twist boat conformation is adopted.

Question 16

The least stable conformation of 3-bromo-2-methylpentane,viewed through the C-3-C-4 bond (i.e.,C-3 in the front,C-4 in the back) :

Accepted Answer

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

Question 17

Which cycloalkane has the least ring strain?

Accepted Answer

A)  Cyclopropane
B)  Cyclobutane
C)  Cyclopentane
D)  Cyclohexane
E)  Cycloheptane

Question 18

What is the name of the IUPAC name of the following compound?

Accepted Answer

A)  trans-4-chlorocyclohexan-1-ol
B)  cis-1-chlorocyclohexan-4-ol
C)  trans-4-chlorocyclohexanol
D)  cis-4-chlorocyclohexanol
E)  none of these choices

Question 19

Which staggered Newman projection(s) ,looking down the C-3-C-4 bond (C-3 in front and C-4 in back) ,illustrate(s) the following boxed compound?

Accepted Answer

A)  I,II and III
B)  II and V
C)  I and II
D)  III only
E)  None of these choices.

Question 20

The most stable conformation of butane is:

Accepted Answer

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

Exam 4: Nomenclature and Conformations of Alkanes and Cycloalkanes

The least stable conformation of butane is:

Correct AnswerverifiedShow Answer

To determine the parent name for an alkane,we begin by finding the ___.

Correct Answerverifiedlongest co...View AnswerShow Answer

What is the index of hydrogen deficiency (or degree of unsaturation) of the following molecule?

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How many constitutional isomers are possible for the formula C6H14?

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A compound containing a triple bond between the first two carbons in the chain is called a ___.

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What is the name of the IUPAC name of the following compound?

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The least stable conformation of 3-bromo-2-methylpentane,viewed through the C-3-C-4 bond (i.e.,C-3 in the front,C-4 in the back) :

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The most stable conformation of trans-1-tert-butyl-3-methylcyclohexane is the one in which:

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Which statement(s) is/are true about a molecule with the molecular formula C10H20, that when subjected to catalytic hydrogenation there is no consumption of hydrogen?

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What product is formed when 5-chlorocyclohex-3-en-1-ol is reacted with Pd/C and H2?

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What is the index of hydrogen deficiency (or degree of unsaturation) of a compound with the molecular formula of C21H30O5?

Correct AnswerverifiedShow Answer

Which staggered Newman projection(s) ,looking down the C-3-C-4 bond (C-3 in front and C-4 in back) ,illustrate(s) the following boxed compound?

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Select the structure for cis-3-methyl-6-vinylcyclohexene.

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What is the index of hydrogen deficiency (or degree of unsaturation) for the drug morphine?

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Which of the following is a correct name which corresponds to the common name tert-pentyl alcohol?

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The correct IUPAC name for the following compound is:

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Chair conformations for cyclohexane systems are always the lowest energy conformation possible.

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The most stable conformation of butane is:

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How many alkanes of formula C7H16 possess a quaternary carbon atom?

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Which cycloalkane has the least ring strain?

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longest co...
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How many constitutional isomers are possible for the formula C₆H₁₄?

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Which statement(s) is/are true about a molecule with the molecular formula C₁₀H₂₀_, that when subjected to catalytic hydrogenation there is no consumption of hydrogen?

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What product is formed when 5-chlorocyclohex-3-en-1-ol is reacted with Pd/C and H₂?

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What is the index of hydrogen deficiency (or degree of unsaturation) of a compound with the molecular formula of C₂₁H₃₀O₅?

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How many alkanes of formula C₇H₁₆ possess a quaternary carbon atom?

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