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6. Which method is renewable and produces dilute solution?

  • Evaporation
  • Fermentation
  • Direct hydration

7. What are the products when ethene is burned with a sufficient supply of oxygen?

  • Carbon dioxide and water
  • Carbon monoxide and water
  • Carbon monoxide

8. What is the general formula for Alkanes?

  • CnHn
  • CnH2n+2
  • CnH2n

9. What is the general formula for Alkenes?

  • CnH2n
  • CnHn
  • CnH2n+2

10. What is a saturated compound?

  • A compound in which all the bonds are triple
  • A compound in which all the bonds are single
  • A compound in which all the bonds are double

11. What is the molecular formula of propane?

  • CH4
  • C3H8
  • C2H6

12. What method is fast and requires high pressures and temperatures?

  • Direct hydration
  • Fermentation
  • Evaporation

13. What will all alkenes do to bromine?

  • Decolourise it
  • Turn it blue
  • Make it evaporate

14. What is a homologous series?

  • A series of organic compounds that have different formulas, and similar chemical reactions.
  • A series of organic compounds that have the same general formula, and similar chemical reactions.
  • A series of physical compounds that have the same general formula, and similar chemical reactions.

15. What is a general formula?

  • A formula that states the percentage the atoms of each element in a particular homologous series.
  • A formula that states the ratio of the atoms of each element in a particular homologous series.
  • A formula that states the ratio of the atoms of the same element in a particular homologous series.

16. What is the equation for the combustion of ethanol?

  • C2H5OH + 3O2 ---> 2CO2 + 3H2O
  • C2H5OH + 2O2 ---> 2CO2 + 3H2O
  • C2H4OH + 3O2 ---> 2CO2 + 3H2O

17. What is the molecular formula of methane?

  • C3H8
  • CH4
  • C2H6

18. What is the equation for the dehydration of ethanol?

  • C2H5OH ---> C2H4 + H2O
  • C2H5OH ---> C2H3 + H2O
  • CH5OH ---> C2H4 + H2O

19. What type of reaction do alkenes under go with halogens?

  • Addition
  • Precipitation
  • Substitution

20. What is the equation for direct hydration?

  • C2H4 + H2O ---> C2H5OH
  • C2H3 + H2O ---> C2H5OH
  • C2H4 + HO ---> C2H5OH