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Chemistry Test: Hydrocarbons
Multiple Choice
Choose the letter of the correct name for each structure.
1. CH3CH=CHCH2CH3
A. 2-pentene
B. 3-pentene
C. 4-pentene
2. CH3CH2C CCH3
A. 4-pentyne
B. 3-pentane
C. 2-pentyne
3. CH3CH2C CCH2CH3
A. 3-hexene
B. 3-hexyne
C. 3-pentyne
4. CH3CH2CH2CH2CH3
A. propane
B. pentane
C. hexane
5. CH3CH2CH=CHCH2CH2CH=CH2
A. 1,5-octadiene
B. 3,7-octadiene
C. 4,8-dioctene
6. What is the molecular formula of benzene?
A. C6H6
B. C6H12
C. C6H14
D. C12H12
7. Which of the following is the best way to represent the structure of benzene?
A.
B.
C.
D.
8. Which of the following groups is characteristic of an alcohol?
A. -CO
B. -COOH
C. -NH2
9. Name the cycloalkane given below.
D. -OH
A. 1,2,4-trimethylcyclohexane
C. 1,2,4-trimethylcyclopentane
B. 1,2,4-dimethylcyclopentane
D. 1,3,5-trimethylcyclopentane
10. The structure of 3-ethyl-5,7-dimethyl-5-propylnonane is ____.
A.
C.
B.
D.
11. Which of the following suffixes is used in naming alcohols?
A. -al
B. -oic
C. -ol
D. -ane
12. The correct IUPAC name of the compound
is ____.
A. 3,4-dimethylpentane
C. 2,3-dimethylpentane
B. 2,3-dimethylbutane
D. 2,2,3-dimethylbutane
13. The correct structural formula of 1,2-diethyl-2,3-dimethyl-6-propylcyclooctane is ____.
A.
C.
B.
D.
14. The correct condensed structure of a compound having the IUPAC name 6-ethyl-6,7-dimethyl-2,4dioctyne is ____.
A.
B.
C.
D.
15. Which group of organic compounds can be considered derivatives of ammonia, NH3?
A. ester
B. ketone
C. aldehyde
D. amine
16. How many covalent bonds can a carbon atom usually form?
A. 2
B. 3
C. 4
D. 5
17. Carbon atoms readily join with atoms of
A. metals.
C. both other elements and carbon.
B. carbon only.
D. nonmetals.
18. What do all organic compounds contain?
A. hydrogen
B. water
C. oxygen
D. carbon
19. 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.
20. Which of the following is an alkane?
A. propyne
C. propene
B. propane
D. propyl bromide
21. 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.
22. The systematic names of ketones end in
A. -al.
B. -one.
C. -ol.
D. -oic.
23. What is the name of the alkane having five carbons?
A. propane
B. methane
C. octane
D. pentane
24. Which of the following compounds is trichloromethane?
A.
C.
B.
D.
25. Name the compound CH CH O CH CH CH .
A. diethyl ether
C. ethylpropyl ether
B. dipropyl ether
D. pentane oxide
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