jor pre 2. Which one of the following compounds is an alkyne? 0 HC-CE-CH H3C-C-(CH C a. HyC-C=C-CH H H н Н b. d. 3. Arrange the following Hydrocarbons according to increasing number of carbons. Butane, Methane, Pentane c. Propane, Ethane, Butane b. Ethane, Butane, Pentane d. Methane, Butane, Propane 4. Which of the following is NOT an application of Hydrocarbons? a. Plastics c. Natural gas and Fuels b. Pharmaceutics d. none of the above 5. Which hydrocarbon compound has a double bond in the molecule? a. Ethane b. Pentene c. Propyne d. none of the above IL How
