Other questions in this quiz

2. Pure copper, gold, iron, aluminium are too soft, what are these metals mixed with to make them harder?

  • Bigger amounts of a range of metals
  • Small amounts of similar metals
  • Small amounts of a range of metals
  • Bigger amounts of similar metals

3. What is a specfic property of high carbon steels?

  • They are resistant to corrosion
  • They are hard
  • They are easily shaped
  • They are soft

4. Which of the following is NOT a reason why copper is good for electrical wiring and plumbing?

  • It does not react with water
  • It is a good conductor of heat and electricity
  • It is cheap
  • It can be bent but is hard enough to make pipes or tanks

5. Why can't aluminium and titanium be extracted from their oxides by reduction with carbon?

  • It's too expensive
  • They are more reactive than carbon
  • Large amounts of energy are needed
  • There are many stages in the processes


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