Chemistry 0620 · IGCSE · The characteristic properties of acids and bases

The characteristic properties of acids and bases — practice question

Farmers spread calcium oxide (lime) and ammonium salts onto their fields. These compounds are not applied at the same time because they react with one another. Which gas is formed in this reaction?

  • Aammonia
  • Bcarbon dioxide
  • Chydrogen
  • Dnitrogen

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