Chemistry 0620 · IGCSE · Formulae, functional groups and terminology

Formulae, functional groups and terminology — practice question

Caffeine is a stimulant present in coffee. Which formula is the one that represents caffeine?

  • A$\text{C}_7\text{H}_{10}\text{N}_4\text{O}_2$
  • B$\text{C}_8\text{H}_{10}\text{N}_3\text{O}_2$
  • C$\text{C}_8\text{H}_{10}\text{N}_4\text{O}_2$
  • D$\text{C}_8\text{H}_{11}\text{N}_4\text{O}_2$

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