11. How will you describe an alkyne?
a. An alkyne is a hydrocarbon with single bond.
b. An alkyne is a hydrocarbon with double bond.
c. An alkyne is a hydrocarbon with triple bond.
d. An alkyne is a hydrocarbon without bond.

12. What is the maximum number of bonds a carbon atom can form?
a. 2
b. 3
c. 4
d. 5

13. Which of the following is an organic compound?
a. NaCl
b. CO2
C. NaOH
d. LiBr

14. What type of hydrocarbon has a triple bond?
a. Alkane
b. alkene
d. none
c. alkyne

15. Which of the following is NOT organic compound?
a. CaBr2
b. CHA
c. C6H1206
d. CH OH

16. What is the charged of Calcium that has lost two electrons?
a. +1
b. -1
c. +2
d. -2​