Chemistry 0620 · IGCSE · Water

Water — practice question

Lime (calcium oxide) is used in the treatment of waste water from a factory. Which substance does the lime remove?

  • Aammonia
  • Bsodium chloride
  • Csodium hydroxide
  • Dsulfuric acid

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI