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6. Bromoethane reacts with KOH in aqueous conditions to form CH2=CH2?

  • False
  • True

7. Why do CFC's reach high into the atmosphere when chlorine gas doesn't?

  • They are unreactive
  • They are less dense
  • They temporarily bind to carbon dioxide
  • The ozone layer attracts them

8. Which of these reacts the fastest when attacked by a nucleophile?

  • fluoroalkanes
  • iodoalkanes
  • chloroalkanes
  • bromoalkanes

9. What are reactions started by ultraviolet light called?

  • photochemical reactions
  • cracking
  • free radical substitutions
  • nucleophilic substitution

10. Which gas leads to acid rain? (most commonly)

  • Sulphur dioxide
  • Hydrogen chloride
  • Sodium hydroxide
  • Potassium Nitrate

11. Which gases react in a catalytic converter to form less harmful products?

  • carbon dioxide and carbon monoxide
  • carbon monoxide and nitrous oxides
  • carbon dioxide and water
  • hydrogen and nitrous oxides

12. what reaction does aqueous conditions favour?

  • nucleophilic subsitution
  • nucleophilic elimination

13. Which nucleophilic substitution reaction has 2 steps instead of one?

  • reactions with ammonia
  • reactions with cyanide
  • reactions with hydroxides

14. what is the reaction called when free radicals are produced?

  • propagation reaction
  • initiation reaction
  • primary reaction
  • preparation reaction

15. what reaction does anhydrous conditions favour?

  • nucleophilic elimination
  • nucleophilic subsitution

16. what products would be formed if a chlorine radical attacks a methane molecule?

  • a hydrogen radical and chlromethane
  • chloromethane and a hydrogen molecule
  • a hydrogen chloride molecule and a methyl radical
  • a chlorine radical and a methyl radical

17. What is formed when halogenoalkanes react with hydroxides?

  • amines
  • alcohols
  • nitriles

18. What is the main concern with CFCs?

  • They cause acid rain
  • They are poisonous and cause breathing problems
  • They are destroying the ozone layer
  • They cause global warming

19. what is a free radical?

  • a species which attracts a C delta + atom
  • a particle with an unpaired electron
  • a bond which splits equally

20. Which of these is not true about halogenoalkanes?

  • they are often referred to as electron pair donors
  • the C-halogen bond is polar because the halogen is much more electronegative than the carbon
  • the delta + charge on the carbon makes it prone to attack from nucleophiles
  • they are alkanes with at least one halogen atom in place of a hydrogen atom