Reaction of Alkenes

Which type of reaction do alkanes mainly undergo?

• Substitution
• Addition
• Combustion
• Reduction

What is the main product when alkanes combust completely?

• Carbon dioxide and water
• Carbon monoxide and water
• Hydrogen and water
• Methane and water

What is the main product when alkanes combust incompletely?

• Carbon monoxide and water
• Carbon dioxide and water
• Oxygen and water
• Carbon and oxygen

What is the general formula of alkanes?

• CnH2n+2
• CnH2n
• CnH2n-2
• CnH2n+1

What type of bond exists between carbon atoms in alkanes?

• Single bond
• Double bond
• Triple bond
• Ionic bond

What is the main reactant in the substitution reaction of alkanes with halogens?

• Halogen molecule
• Oxygen
• Hydrogen
• Nitrogen

What is required for the substitution reaction of alkanes with halogens?

• UV light
• High pressure
• High temperature
• Catalyst

What is the product of a substitution reaction between methane and chlorine in the presence of UV light?

• Chloromethane
• Dichloromethane
• Ethane
• Methanol

What type of reaction occurs when methane reacts with chlorine?

• Substitution
• Combustion
• Addition
• Reduction

Why do alkanes not react with acids or alkalis?

• They are non-polar molecules
• They are polar molecules
• They are ionic compounds
• They are highly reactive