Other questions in this quiz

2. which of these does salt not have to pure to use?

  • preserving food
  • not sure
  • Road grit (winter snow ice melting)
  • flavouring food

3. which element is not in PVC?

  • Sodium
  • Carbon
  • Chlorine
  • Hydrogen

4. Which methord of salt mining is used for road grit in the winter?

  • i dunno
  • solution mining
  • Salt mining
  • evaporating sea water

5. which of these reasons is wrong; "toymakers use PVC because..."

  • stands to rough play
  • easy to keep clean
  • can be mixed with pigments to give bright colours
  • its safe and untoxic
  • it can be rigid or flexable


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