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Organic Chemistry - Chapter 20 Prep Test

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 
Carbon shows a very strong tendency to form
a.
ionic bonds.
c.
hydrogen bonds.
b.
covalent bonds.
d.
highly polar bonds.
 

 2. 
How many covalent bonds can a carbon atom usually form?
a.
2
c.
4
b.
3
d.
5
 

 3. 
What do all organic compounds contain?
a.
hydrogen
c.
oxygen
b.
water
d.
carbon
 

 4. 
Organic compounds are so numerous because carbon atoms
a.
are highly electronegative.
c.
are very small.
b.
can bond with each other in many ways.
d.
are stable and very common in nature.
 

 5. 
Hydrocarbons in which carbon atoms are connected by only single bonds in straight chains or branched chains are called
a.
aromatic hydrocarbons.
c.
alkenes.
b.
alkynes.
d.
alkanes.
 

 6. 
Hydrocarbons in which carbon atoms form only single bonds and are arranged in a ring are called
a.
cycloalkanes.
c.
alkenes.
b.
alkynes.
d.
aromatic hydrocarbons.
 
 
nar001-1.jpg
 

 7. 
In the figure above, name the compound in diagram D.
a.
2-bromopropyne
c.
2-bromopropane
b.
2-bromopropene
d.
2,2-bromopropene
 

 8. 
In the figure above, name the compound in diagram A.
a.
ethane
c.
ethyne
b.
ethene
d.
ethadiene
 

 9. 
In the figure above, name the compound in diagram C.
a.
diethylpentane
c.
3-methylpentane
b.
3-isoheptane
d.
3-ethylpentane
 

 10. 
In the figure above, name the compound in diagram B.
a.
1,3-butadiene
c.
2,3-butadiene
b.
1,4-butadiene
d.
1,3-butene
 
 
nar002-1.jpg
 

 11. 
In the figure above, which structural formula represents methylcyclohexane?
a.
A
c.
C
b.
B
d.
D
 

 12. 
In the figure above, name the compound in diagram B.
a.
1,1-dimethylcyclopentane
c.
cycloheptane
b.
ethylcyclopentane
d.
propylcyclohexane
 

 13. 
Which hydrocarbons are saturated?
a.
alkenes
c.
alkynes
b.
alkanes
d.
aromatic hydrocarbons
 

 14. 
The two resonance structures of benzene have
a.
only single bonds.
c.
alternating double and triple bonds.
b.
only double bonds.
d.
alternating single and double bonds.
 

 15. 
How many double covalent bonds are in an alkane?
a.
0
c.
2
b.
1
d.
3
 

 16. 
How many carbons are in a molecule of hexane?
a.
3
c.
5
b.
4
d.
6
 

 17. 
Which of the following is a condensed structural formula for propane?
a.
Cmc017-1.jpgHmc017-2.jpg
c.
CHmc017-6.jpgCHmc017-7.jpgCHmc017-8.jpg
b.
CHmc017-3.jpgCHmc017-4.jpgCHmc017-5.jpg
d.
CHmc017-9.jpgCHmc017-10.jpgCHmc017-11.jpgCHmc017-12.jpg
 

 18. 
The name for an alkyl group that contains two carbon atoms is ____.
a.
diphenyl
c.
dimethyl
b.
ethyl
d.
propyl
 

 19. 
What is the name of the compound CHmc019-1.jpgCH(CHmc019-2.jpg)C(CHmc019-3.jpg)mc019-4.jpg?
a.
2,2,3-trimethylbutane
c.
1,1,1,2-tetramethylpropane
b.
tetramethylpropane
d.
isoheptane
 

 20. 
Which of the following compounds is an unsaturated hydrocarbon?
a.
methane
c.
nonane
b.
propyne
d.
methyl
 

 21. 
The general name for hydrocarbons with at least one triple covalent bond is ____.
a.
alkenes
c.
alkanes
b.
alkyls
d.
alkynes
 

 22. 
What is the name of the smallest alkyne?
a.
butyne
c.
methyne
b.
ethyne
d.
propyne
 

 23. 
The most important way to classify organic compounds is by ____.
a.
the number of carbon atoms in the longest chain
b.
functional group
c.
the type of carbon—carbon bonds
d.
reactivity
 

 24. 
What type of compound is CHmc024-1.jpg¾O¾CHmc024-2.jpg¾CHmc024-3.jpg¾CHmc024-4.jpg?
a.
alcohol
c.
ether
b.
aldehyde
d.
ketone
 

 25. 
Name the following compound.
      CHmc025-1.jpg¾CHmc025-2.jpg¾CHmc025-3.jpg¾CHmc025-4.jpg¾O¾CHmc025-5.jpg¾CHmc025-6.jpg¾CHmc025-7.jpg¾CHmc025-8.jpg¾CHmc025-9.jpg¾CHmc025-10.jpg
a.
butoxyhexane
c.
hexylbutane
b.
butylcyclohexyl
d.
butylhexane
 

 26. 
Name the compound CHmc026-1.jpgCHmc026-2.jpgO CHmc026-3.jpgCHmc026-4.jpgCHmc026-5.jpg.
a.
diethyl propane
c.
ethoxypropane
b.
dipropyloxyether
d.
pentoxy ether
 

 27. 
Which carbon skeleton represents an ether?
a.

C¾C¾C¾O¾C¾C¾C
c.

mc027-2.jpg
b.

mc027-1.jpg
d.

none of the above
 

 28. 
A ketone has the general structure ____________.
a.

R¾O¾R
c.

mc028-2.jpg
b.

mc028-1.jpg
d.

mc028-3.jpg
 
 
nar003-1.jpg
 

 29. 
In the figure above, what is the structural formula for butane?
a.
A
c.
C
b.
B
d.
D
 
 
nar004-1.jpg
 

 30. 
In the figure above, what is the structural formula for propyne?
a.
A
c.
C
b.
B
d.
D
 

 31. 
Which hydrocarbons do NOT have double or triple bonds?
a.
alkanes
c.
alkynes
b.
alkenes
d.
alkadienes
 



 
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