Hydrocarbons Quiz

What is the general formula for alkanes?

• CnH2n-2

• CnH2n+2

• CnH2n+1

• CnH2n

Which of the following is a saturated hydrocarbon?

• Ethylene

• Methane

• Benzene

• Acetylene

What type of isomerism do alkenes exhibit due to restricted rotation?

• Structural isomerism

• Chain isomerism

• Geometrical isomerism

• Conformational isomerism

Which of the following hydrocarbons is known as a source of energy?

• Benzene

• Methane

• Cyclohexane

• Ethylene

What is the first member of the alkyne series?

• Propyne

• Butyne

• Acetylene

• Hexyne

Which reaction is used to prepare alkenes from alkynes?

• Hydrogenation

• Dehydrohalogenation

• Ozonolysis

• Reduction

What is the main characteristic of aromatic hydrocarbons?

• They are always colorless

• They have a high boiling point

• They contain a benzene ring

• They are saturated

Which of the following is a method to prepare benzene?

• Addition of water to alkynes

• Electrophilic substitution

• Decarboxylation of aromatic acids

• Hydrogenation of ethylene

What type of reaction do alkenes primarily undergo?

• Combustion reactions

• Elimination reactions

• Addition reactions

• Substitution reactions

Which group is considered a meta-directing group in electrophilic substitution?

• -OH

• -NO2

• -CH3

• -Cl