15. Most well-known for its presence at parties, this functional group consists of OH bonded to a R group.

a. alcohol b. aldehyde

e. carboxylic acid d. ester

16. Alkanes are hydrocarbons, as they only contain the elements hydrogen and carbon. What is the name of simplest alkane?

a butane b. ethane

cp methane

d. propane

17. Which of the following alkenes doesn't exist?

a. butene b. methene

. pentene d. octene

18. Aldehydes are often use for fragrances and flavors. Which of

the following is the functional group of it?

a. ROH b. ROR

C. ECHO d. RCOR

19. Cigarette smoking is dangerous to one's health. Which of the following is the harmful carbon compound found in cigarettes?

a. caffeine b. morphine

c. nicotine

d. thiamine

20. Testosterone and progesterone are hormones essential to human beings. In what class do these sex hormones belong?

a. Alkynes

b. Esters

c. Carboxylic acids

d. Ketone

21. The following are representative particles of matter. Which

among them represents the covalent bond?

a. atom b. font

c. molecule d. particle unit

22. How can knowledge about mole be useful for environmentalists? a. Mole concept can be used in environmental monitoring.

b. It gives information on the most dangerous pollutant in the c. It gives a feedback on the kinds of pollutants present in

atmosphere.

the atmosphere.

d. Mole concept can be used in quantifying the amount of

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