CHM 2046C Kotz 6th
Edition Chapter 11
Practice Test 1
1. The existence of thousands of different hydrocarbons is because
|
a. |
carbon exists in
allotropic forms. |
|
b. |
carbon can form
four bonds. |
|
c. |
carbon forms
strong bonds with both itself and hydrogen. |
|
d. |
carbon forms
strong bonds with itself and weak bonds with hydrogen. |
|
e. |
carbon forms weak
bonds with itself and strong bonds with hydrogen. |
2. The chemical structure
represents a molecule of molecular formula:
|
a. |
C8H10 |
|
b. |
C6H6 |
|
c. |
C6H8 |
|
d. |
C8H12 |
|
e. |
C8H6 |
3. The compounds pentane and 2-methyl butane would be expected to have the same
|
a. |
melting points. |
|
b. |
boiling points. |
|
c. |
solubility in
benzene. |
|
d. |
structural
formulas. |
|
e. |
percentage
composition. |
4. Four of the following compounds are structural isomers. Which one is not one of these isomers?
|
a. |
|
|
b. |
|
|
c. |
|
|
d. |
|
|
e. |
|
5. The total number of isomeric alkanes
of the molecular formula C5H12 is
|
a. |
1. |
|
b. |
2. |
|
c. |
3. |
|
d. |
4. |
|
e. |
5. |
6. Which one of the following is the formula of an alkene?
|
a. |
C2H6 |
|
b. |
C2H2 |
|
c. |
C3H6 |
|
d. |
C4H10 |
|
e. |
C5H12 |
7. Which one of the following could be the formula of an alkyne?
|
a. |
C4H10 |
|
b. |
C3H4 |
|
c. |
C6H6 |
|
d. |
C6H12 |
|
e. |
C3H8 |
8. The formula of cyclobutane is
|
a. |
C4H6. |
|
b. |
C4H8. |
|
c. |
C3H6. |
|
d. |
C4H10. |
|
e. |
C4H12. |
9. How many hydrogen atoms are needed to complete the following
hydrocarbon structure?
|
a. |
4 |
|
b. |
5 |
|
c. |
6 |
|
d. |
8 |
|
e. |
10 |
10. The hydrocarbon containing a carbon-carbon triple bond is
called a(n)
|
a. |
alkene. |
|
b. |
alkane. |
|
c. |
cycloalkene. |
|
d. |
alkyne. |
|
e. |
aromatic. |
11.. The correct structure of meta dichlorobenzene is
|
a. |
|
|
b. |
|
|
c. |
|
|
d. |
|
|
e. |
|
12. How many different alkenes (be sure to include geometrical isomers) are there that have the formula C4H8?
|
a. |
2 |
|
b. |
3 |
|
c. |
4 |
|
d. |
5 |
|
e. |
6 |
13. All of the following describe benzene EXCEPT
|
a. |
an aromatic hydrocarbon. |
|
b. |
three double bonds. |
|
c. |
resonance hybrid structures. |
|
d. |
undergoes substitution reactions. |
|
e. |
can have ortho-, meta-, and para-disubstituted products. |
14. Which of the following compounds has cis-trans isomers?
|
a. |
H2C=C(CH3)2 |
|
b. |
ClHC=C(CH3)2 |
|
c. |
CH3C |
|
d. |
H3C-C(CH3)3 |
|
e. |
CH3HC=CHCH3 |
15. The formula(s) of a
structural (functional) isomer of 2-butyne is (are)
1. CH3CH
CHCH3
2. CH2=C=CHCH3
3. CH2=CHCH =CH2
4. 
|
a. |
1 only |
|
b. |
2 only |
|
c. |
2 and 3 only |
|
d. |
1, 2, and 3 only |
|
e. |
2, 3, and 4 only |
16. The total number of
isomers with the formula C3H8O is
|
a. |
1. |
|
b. |
2. |
|
c. |
3. |
|
d. |
4. |
|
e. |
5. |
17. The functional group
is characteristic of organic
|
a. |
ketones. |
|
b. |
acids. |
|
c. |
aldehydes. |
|
d. |
esters. |
|
e. |
alcohols. |
18. Which of the following compounds is an ester?
|
a. |
|
|
b. |
|
|
c. |
|
|
d. |
|
|
e. |
|
19. The products of the
complete combustion of acetaldehyde with oxygen are shown in the equation
below:
___ CH3CHO + ___ O2 --> ___ CO2
+ ___ H2O
When properly balanced, the equation indicates that _______ mole(s) of O2 are required for each mole of acetaldehyde.
|
a. |
1 |
|
b. |
2 |
|
c. |
2.5 |
|
d. |
3 |
|
e. |
5 |
20. The reagents for the preparation of an ester could be
|
a. |
an organic acid. |
|
b. |
an alcohol and a ketone. |
|
c. |
an ether and an alcohol. |
|
d. |
an organic acid and an alcohol. |
|
e. |
an alkene and an ether. |
21. Ethanol can be oxidized stepwise to two stable intermediate products. One of these intermediate products is
|
a. |
CH3CH2OOH. |
|
b. |
CO2. |
|
c. |
CH3CHO. |
|
d. |
CH3CH2OH. |
|
e. |
CH3OCH3. |
22.. The C=O linkage occurs in all the following functional groups EXCEPT
|
a. |
aldehydes. |
|
b. |
ketones. |
|
c. |
ethers. |
|
d. |
esters. |
|
e. |
amides. |
23. Between which one of the following pairs of reagents is the reaction an electrophilic substitution reaction?
|
a. |
CH3CH=CHCH3
+ HBr |
|
b. |
CH3CH=CHCH3
+ Br2 |
|
c. |
CH3CH2CH2Br
+ NaOH(aq) |
|
d. |
C6H6 + Br2/FeBr3
|
|
e. |
C2H5OH + HCl |
24. Which of the following is an example of an addition polymer?
|
a. |
Styrene |
|
b. |
Nylon |
|
c. |
Ethers |
|
d. |
Polyesters |
|
e. |
Polyamides |
25. Which of the following statements about polymers is (are)
TRUE?
1. They are macromolecules.
2. They have simple repeating units.
3. Their structures can be represented by a simple repeating unit.
|
a. |
1 only |
|
b. |
2 only |
|
c. |
3 only |
|
d. |
2 and 3 only |
|
e. |
1, 2, and 3 |