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6. what mixture of butane and propane is released at the top?

  • liquified petroleum gas
  • liquified propane solution
  • liquified pethanol oil
  • liquified palonium gasoline

7. craking is used to make alkenes for?

  • breaking down hydrocarbons
  • creating covalent bonds
  • making poylmers
  • making hydrocarbons

8. how hot is it at the bottom of a fractional distilation column?

  • 70
  • 110
  • 320
  • 50

9. cracking is used to make petrol from?

  • nepatha
  • naphtha
  • napiltha
  • napalath

10. when the intermolecular forcers are short what happens?

  • they are easily overcome
  • bond and create convalent bonds
  • sink to the bottom of the fractional distilation column
  • gradualy break down

11. in a hydrocarbon there are?

  • strong covalent bonds and strong intermolecular forces
  • strong covalent bonds and weak intermolecular forces
  • ionic bonds and weak intermolecular forces
  • ionic bonds and strong intermolecular forces

12. what are the intermolecular forces between longer hydrocarbons like?

  • more compact
  • stronger
  • weaker
  • more ionised

13. hydrocarbon molecules can be described as what?

  • alkenes and halogens
  • polymers and polypropanes
  • alkanes and alkenes
  • alkanes and naptha

14. fossil fuels are finite because?

  • they are being used up faster then they can be created
  • they arehard to extract
  • the rates of extraction and consumtion are equal
  • they are damaging for the envionment

15. what can be broken down into smaller useful alkanes and alkenes

  • hydrocarbons
  • alkanes
  • alkanes and alkenes
  • alkenes

16. how hot is it at the bottom of a fractional distilation column?

  • over 400
  • over 800
  • 500
  • 350