Hydrocarbons are organic compounds composed of only:
ACarbon, hydrogen, and oxygen
BCarbon and hydrogen only
CCarbon, hydrogen, and nitrogen
DCarbon and oxygen only
Question 3
Ethanol (C₂H₅OH) is an example of which functional group?
AAldehyde (−CHO)
BKetone (C=O in chain)
CAlcohol (−OH)
DCarboxylic acid (−COOH)
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