III. Given the structural formula CH,C(CH3)2CH2CH3.

11. Which carbons are primary carbons?
a. 1 & 2 b. 1 & 3 c. 1 & 4 d. 1 & 5

12. Which carbon is a secondary carbon?
a. 1 b. 2 c. 3 d. 4

13. Which carbon is a tertiary carbon?
a. 1 b. 2 c. 3 d. none

14. Which carbon is quaternary carbon?
a. 1 b. 2 c. 3 d. none

15. What is the IUPAC name of this hydrocarbon?
a. Hexane b. Isohexane c. 2,2-dimenthylbutane d. 3,3-dimenthylbutane

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