Final Review (IG chemistry)

What is the general formula for alkanes?

• CnH2n

• CnH2n+2

• CnH2n-2

• CnH2nO2

Which statement is true about alkenes?

• They have only single bonds

• They are saturated hydrocarbons

• They contain double bonds

• They do not react with bromine water

Which of the following is an alkene?

• CH4

• C2H4

• C2H6

• C3H8

Which process breaks large hydrocarbons into smaller ones?

• Polymerisation

• Cracking

• Distillation

• Neutralisation

What is the main product of complete combustion of a hydrocarbon?

• Water and carbon monoxide

• Water and carbon dioxide

• Hydrogen and carbon

• Methane and ethane

What is the functional group in alcohols?

• –COOH

• –OH

• –C≡C–

• –NH₂–

Which alcohol is commonly found in alcoholic drinks?

• Methanol

• Ethanol

• Propanol

• Butanol

Which of the following is an alcohol?

• C₂H₆

• C₃H₈

• C₂H₅OH

• CH₄

What happens when alcohol burns in air?

• It produces salt

• It produces carbon dioxide and water

• It explodes

• It changes color

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Why is ethanol added to petrol (gasoline)?

• To change the color

• To reduce pollution

• To make it smell better

• To make it cheaper

Tags

NGSS.HS-ESS3-4

NGSS.HS-ETS1-3