Other questions in this quiz

2. how is crude oil sparated into different groups of hydrocarbons?

  • factional distillation
  • fractional smelting

3. when copper ore is heated in a furnace what is this called?

  • reduction
  • smlting
  • electrolysis

4. what is electrolysis?

  • breaking down a substance using electricity
  • an electric current

5. what is limestone mainly made of?

  • calcium carbonate
  • calcium
  • carbon dioxide

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