Hydrocarbons and Their Properties

What is a hydrocarbon?

• A compound made only of hydrogen and oxygen

• A compound made only of carbon and oxygen

• A compound made only of carbon and hydrogen

• A compound made of carbon, hydrogen, and nitrogen

Which of the following is an example of an alkane?

• C₂H₂

• C₄H₁₀

• C₆H₆

• C₄H₄

What is the general formula for alkenes?

• CₙH₂ₙ

• CₙH₂ₙ₊₂

• CₙHₙ

• CₙHₙ₂

Which of the following hydrocarbons is unsaturated?

• Methane (CH₄)

• Ethylene (C₂H₄)

• Propane (C₃H₈)

• Butane (C₄H₁₀)

What type of bond is present in an alkene?

• Single bond

• Double bond

• Triple bond

• Ionic bond

Which of the following is a property of alkynes?

• They are highly stable and unreactive

• They contain only single bonds

• They have a triple bond between carbon atoms

• They are liquids at room temperature

Which of the following is an aromatic hydrocarbon?

• Methane

• Ethylene

• Benzene

• Propane

Which of these hydrocarbons is most commonly used as fuel in vehicles?

• Methane

• Butane

• Octane

• Cyclohexane

Which of the following is true about the combustion of hydrocarbons?

• Hydrocarbons react with oxygen to produce water and carbon dioxide

• Hydrocarbons react with water to produce oxygen

• Hydrocarbons react with nitrogen to produce ammonia

• Hydrocarbons do not undergo combustion

Which of the following is a property of cycloalkanes?

• They have no rings in their structure

• They are usually more reactive than alkanes

• They contain a closed ring structure of carbon atoms

• They have only single bonds between carbon atoms