HYDROCARBON QUIZES Part I

1. You encounter many organic compounds everyday. Some organic compounds are ethanol (grain alcohol), ethylene glycol (automobile antifreeze), and acetone (nail polish remover). Another organic compound which can be found in the daily life is ….

a. salt
b. water
c. sugar
d. bone
e. mineral

2. Hydrocarbon is one of the organic compound that mainly contains ….
a. carbon
b. hydrogen
c. oxygen
d. carbon and hydrogen
e. carbon and oxygen

3. Hydrocarbons are classified into two main types, aliphatic and aromatic. The following substances which cannot be classified as an aliphatic hydrocarbon is ….

a. alkane
b. alkene
c. alkyne
d. benzene
e. cycloalkane

4. Closed chains of carbon atoms can be explained as ….
a. a chain which only has carbon atoms
b. a cyclic bond among carbon atoms
c. a bond among carbon atoms that form a branched chains
d. a cyclic chain which has a double bond
e. a special chain which contains carbon and hydrogen atoms

5. The special features of carbon below are correct, except ….
a. has tetravalence
b. forms covalence of four
c. can bond one of another
d. the atomic number is 6
e. makes possible branched chains

6. A hydrocarbon in which all carbon atoms are bonded to the maximum number of hydrogen atoms is classified as … hydrocarbon
a. saturated
b. aromatic
c. alkene
d. alkyne
e. cyclic

7. Unsaturated hydrocarbons are ….
a. alkane and alkene
b. alkane and alkyne
c. alkene and alkyne
d. cycloalkane and alkene
e. alkane, alkene, and alkyne

8. Methane is the simplest hydrocarbon. The wrong statement about methane is ….
a. consists of one carbon atom
b. there are 8 electron’s pairs
c. four hydrogen atoms are bonded
d. has four C—H bonds
e. forms a tetrahedral structure

9. The general molecular formula of alkanes is ….
a. CnHn
b. CnH2n
c. CnH3n
d. CnH2n+2
e. –CnH2n+1–

10. What is the common name for the following alkyl group?
       CH3 - C(CH3)3 -
a. Isobutyl
b. Isopropyl
c. tert-butyl
d. sec-butyl
e. isopropyl

11. A homologous series of alkanes is a series of alkane compounds in which one compound differs from a preceding one by ….
a. –CH–
b. –CH2–
c. –CH3
d. –CnH2n–
e. –CnH2n+1–

12. Members of a homologous series have similar … properties.
a. chemical
b. physical
c. general
d. natural
e. special

13. The number of C atoms primer, secunder, tertier of CH3(CH2)2CH(CH3)CH2C(CH3)3 are ….
a. 5, 1,1, 1
b. 4, 2, 1, 1
c. 5, 2, 1, 1
d. 4, 2, 2, 1
e. 4, 1, 2, 1

14. Which compound is likely to have the highest boiling point?
a. n-butane
b. n-hexane
c. decane
d. C13H18
e. C8H18

15. Which one of the following hydrocarbons is a gas at room temperature and pressure?
a. Propane
b. Hexane
c. Octane
d. Nonane
e. Decane

16. What is the IUPAC name of the molecule whose carbon skeleton is shown below?
C
│
C C C
│ │ │
C - C - C - C – C
a. nonane
b. 2,3 – dimethylheptane
c. 1-ethyl - 3,4 – dimethylpentane
d. 5 - ethyl - 2,3 – dimethylpentane
e. 2,3 - dimethyl - 5 – ethylpentane

17. The IUPAC name of the following compound is ....
       CH(CH3)3
a. butane
b. n-butane
c. isobutane
d. cyclobutane
e. 2-methylpropane

18. The condensed structural formula of 4-ethyl-3-methylheptane is ….
a. C2H5CH(CH3)CH(C2H5)(CH2)2CH3
b. C2H5CH(CH3)CH(C2H5)(CH2)2CH3
c. C2H5CH(CH3)CH(C2H5)(CH2)2CH3
d. C2H5CH(CH3)CH(C2H5)(CH2)2CH3
e. C2H5CH(CH3)CH(C2H5)(CH2)2CH3

19. A compound mistakenly named: 3,4-dimethylbutane should be named correctly as ....
a. 2-methylpentane
b. 3-methylpentane
c. 4-methylpentane
d. 2,2-dimethylbutane
e. 2,3-dimethylbutane

20. The IUPAC name of CH3CH2C(CH3)2(CH2)4CH3 is ….
a. 3-methyloctane
b. 3-dimethyloctane
c. 3,3-dimethyloctane
d. 3-dimethylheptane
e. 3,4-dimethyloctane

21. What is best name for the molecule below?
       CH(CH3)(C2H5) - CH(CH3)(C2H5)
a. 3,4-dimethylhexane
b. 3,4-dimethylhexene
c. 2,3-diethylbutane
d. 2-ethyl-3-methylpentane
e. 4-ethyl-3-methylpentane

22. Which is 3-ethyl-2-methylpentane?
a. CH(CH3)-CH(C2H5)2
b. C(CH3)3-CH(C2H5)2
c. CH(CH3)2-CH(C2H5)2
d. CH(CH3)2-CH(CH3)4
e. CH(CH3)2-CH(CH3)(C3H7)

23. The name of CH3CH2CHClCH3 is ….
a. chlorobutane
b. 1-chlorobutane
c. 2-chlorobutane
d. 3-chlorobutane
e. chloro-2-butane

24. The name of this compound is ….
       C6H5CH3
a. methylhexane
b. methylbenzene
c. hexylmethane
d. 1-methylcyclohexane
e. Methylcyclohexane
25. The following compound is named ….
      C6H4Cl2
a. 1,4-dichlorocyclohexane
b. 2,5-dichlorocyclohexane
c. p-dichlorobenzene
d. dichlorocyclohexane
e. 1,4-dichlorobenzene

26. Unsaturated organic compounds contain at least one double or triple bond. These can be shown as ....
a. – C – C – and – C = C –
b. – C – C – and – C ≡ C –
c. – C ≡ C – and – C = C –
d. – C – C – and – C = C = C –
e. – C – C – and – C ≡C = C –

27. Which one of the following hydrocarbons is classified as unsaturated?
a. C2H4
b. C3H8
c. C4H10
d. C6H14
e. C10H22

28. A functional group ....
1. is where chemical reactions occur in an organic molecule
2. determine the family name of the compound
3. is a specific atom or group of atoms
a. 1 only
b. 2 only
c. 3 only
d. 1 and 2
e. 1, 2, and 3

29. The functional group in alkenes is ….
a. a benzene ring
b. an alkene ring
c. a carbon-carbon double bond
d. a carbon-carbon single bond
e. a carbon-carbon triple bond

30. What is the IUPAC name of the molecule whose carbon skeleton is shown below?
C - C - C = C - C
a. 3 – pentane
b. 3–pentene
c. 2 – pentene
d. 2 – pentyne
e. 3 – pentyne

31. The following compounds are alkenes, except ….
a. CH2C(CH3)CH(CH3)2
b. CH3(CH)2CH3
c. C(CH3)3C(CH3)CH2
d. C2H5(CH)2CH3
e. C(CH3)4

32. The homolog series of alkenes are ….
a. C6H10 – C2H2
b. C3H6 – C4H6
c. C4H10 – C3H8
d. C5H8 – C5H12
e. C5H10 – C7H14

33. From the following formulas, 3-methyl-1-butene is ….
a. CH2CHCH3
b. CH2CHCH2CH3
c. CH3C(CH3)CH2
d. CH3CHCHCH3
e. CH3CH(CH3)CHCH2

34. The name of CH2=CHCH(CH3)CH3 is ….
a. 2-2 dimethyl-1-propene
b. 2-methyl-3-butene
c. 2-methyl-2-butene
d. 3-methyl-1-butene
e. 3-methyl-2-butene

35. A compound has two double bonds. This can be classified as ….
a. 2-alkene
b. dialkene
c. double alkene
d. alkadiene
e. alkyne

36. The name of CH2 = C = C(CH3)2 is ….
a. 1-methyl-1,2-butadiene
b. 2-methyl-1,2-butadiene
c. 2-methyl-2,3-butadiene
d. 3-methyl-2,3-butadiene
e. 3-methyl-1,2-butadiene

37. What is best name for the molecule below?
CHCCH(CH3)2
a. 3-methyl-2-butyne
b. 3-methyl-2-butene
c. 3,3-dimethyl-1-propyne
d. 1,1-dimethyl-2-propyne
e. none of the above

38. The possible name of (CH3)2CHCH2C ≡ CH is ....
a. methylpentyne
b. 1-methyl-1-pentyne
c. 4-methyl-1-pentyne
d. 1-methyl-4-pentyne
e. 4-methyl-4-pentyne

39. One of the following compounds which has the same number of carbon and hydrogen atoms with heptyne is …
a. 2-methyl-1-hexyne
b. 4-methyl-1-hexyne
c. 4-methyl-4-hexyne
d. 1,2-dimethyl-1-pentyne
e. 2,3-dimethyl-2-pentyne

40. The possible name of a cycloalkene which contains 5 carbon atoms is ….
a. methylcyclobutene
b. 1-methyl-1-cyclobutene
c. 1-methylcyclobutene
d. methyl-1-cyclobutene
e. 2-methylcyclobutene