A. 1
16. How many types of bonds are there in the given hydrocarbon compound H2C = CH - CH3 ?
D.4
17. When the compound butane, propane, pentane and hexane listed in order of increasing boiling points which
B. 2
C.3
order is correct?
A. butane <propane pentane < hexane
B. hexane <propane <pentanes butane
C. propane <pentane<butane <hexane
D. propane<butane<pentane<hexane
18. Pentane, pentene, and pentyne are hydrocarbons. They have different structures but similar in:
A. number of carbon atoms
C. presence of bond
B. number of hydrogen atoms
D. chemical properties
19. Which of the following pairs is highly flammable?
A. gasoline; acetone
C. oil; vinegar
B. water, ethanol
D. LPG; kerosene
20. What functional group is common to both ketone and aldehyde?
A. -CO
B.-OH
C. COOH
D-O-​