Chemistry 0620 · IGCSE · Identification of ions and gases

Identification of ions and gases — practice question

Aqueous sodium hydroxide is poured onto solid Q in a test-tube. A gas is given off that turns damp red litmus paper blue. Identify Q.

  • Aaluminium
  • Bammonia
  • Cammonium chloride
  • Dsodium nitrate

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