C2 Chemical resources

1. When is concrete made?

  • Heating sand and clay
  • Mixing clay with sand and small stones
  • Mixing cement, sand and small stones
  • Limestone heated with clay
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Other questions in this quiz

2. During the electrolysis of brine, what is made at the anode?

  • Sodium
  • Chlorine
  • Oxygen
  • Hydrogen

3. What causes euthrophication?

  • Fertilisers being washed off fields into rivers and ponds
  • Sunlight not getting through the plants and the plants dying
  • Algae bloom
  • Aerobic bacteria using up oxygen and feeding on decaying plants

4. Which evidence in the 1960s helped scientists accept Wegner's theory?

  • Spreading sea floor
  • Countries looking like a jigsaw
  • Fossils of the same organism found on different continents
  • All of the above

5. What is the lithosphere comprised of?

  • All of the above
  • Mantle
  • Crust
  • Tectonic plates

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