1. From what was crude oil made?

• The bodies of tiny sea creatures kept buried under high pressure and temperature for millions of yea
• The bodies of tiny sea creatures kept buried under high pressure and temperature for thousands of ye
• The bodies of tiny sea creatures kept buried under high pressure and temperature for hundreds of yea
• The bodies of tiny sea creatures kept buried under high pressure and temperature for about twenty ye

2. Which method is used to separate the components of crude oil?

• Filtration
• Chromatography
• Distillation
• Fractional distillation

3. Which of these is not made from one of the components of crude oil?

• Polythene
• Petrol
• Rubber
• Margarine

4. Which of these components of crude oil has the highest boiling point?

• bitumen
• kerosene
• petrol
• petroleum gas

5. How many carbon atoms are found in the petroleum gas fraction of crude oil?

• 0
• 1-4
• 4-8
• 8-12

6. What is the name given to the process that makes long chains of carbon atoms shorter?

• Hydrogenation
• Reforming
• Cracking
• Fractional distillation

7. What name is used to describe hydrocarbons that have 1 set of double bonds between 2 carbon atoms?

• saturated
• unsaturated
• polyunsaturated
• polysaturated

8. Which group of hydrocarbons have the general formula CnH₂n+₂?

• alkanes
• alkenes
• alkynes
• arenes

9. What chemical could be used to tell the difference between an alkane and an alkene?

• Fluorine water
• Chlorine water
• Bromine water
• Iodine water

10. Which of the following pairs could not have been made by cracking decane?

• C₆H₁₂ and C₄H₁₀
• C₅H₁₂ and C₅H₁₀
• CH₄ and C₉H₁₈
• C₄H₁₀ and C₆H₁₀

11. What is the molecular formula of butane?

• C₅H₁₂
• C₄H₁₀
• C₄H₈
• C₃H₈

12. What is the structural formula of propene?

• H₂C=CH-CH₃
• H₂C=C=CH₂
• H₃C-CH₂-CH₃
• H₂C=CH-C₂H₅

13. Polythene is a polymer of ethene (C₂H₄). What type of polymer is polythene?

• Oxidation
• Reduction
• Condensation
• Addition

14. Explain the term condensation polymer.

• A polymer that when it is made a small molecule is eliminated
• A polymer that is made by adding the monomer together
• A polymer that collects water when it is made
• A polymer that has water is one of the monomers

15. Which of the following is not a condensation polymer?

• Protein
• Perspex
• PVC
• Nylon