Exploring Hydrocarbons: Alkanes and Alkenes

What is the general formula for alkanes?

• CnH(2n+2)

• C(n-1)H(2n-2)

• C2nH2n

• CnH2n

Name the first three alkanes in the homologous series.

• Methane, Ethane, Propane

• Butane, Pentane, Hexane

• Ethylene, Propylene, Butylene

• Methanol, Ethanol, Propanol

What type of bond is present in alkenes?

• Ionic bond (Na-Cl)

• Single bond (C-C)

• Triple bond (C≡C)

• Double bond (C=C)

How do alkenes differ from alkanes in terms of saturation?

• Alkenes are unsaturated, while alkanes are saturated.

• Alkenes contain only single bonds, while alkanes contain double bonds.

• Alkenes are saturated, while alkanes are unsaturated.

• Both alkenes and alkanes are unsaturated.

What is the name of the alkene with four carbon atoms?

• propene

• pentene

• butene

• hexene

Which alkane is commonly known as methane?

• Methane

• Propane

• Butane

• Ethane

What is the process called that converts alkenes into alkanes?

• Hydrogenation

• Cracking

• Hydrolysis

• Dehydrogenation

Identify the functional group present in alkenes.

• Carbon-carbon double bond (C=C)

• Carbon-nitrogen triple bond (C≡N)

• Carbon-oxygen double bond (C=O)

• Carbon-carbon single bond (C-C)

What is the significance of the double bond in alkenes?

• The double bond in alkenes decreases reactivity and prevents isomerism.

• The double bond in alkenes has no effect on molecular structure.

• The double bond in alkenes increases reactivity and allows for geometric isomerism.

• The double bond in alkenes is only significant in aromatic compounds.

How do the boiling points of alkanes compare to those of alkenes?

• Alkenes have higher boiling points than alkanes.

• Alkenes have lower boiling points than alkanes.

• Alkanes and alkenes have the same boiling points.

• Alkanes have higher boiling points than alkenes.