Chemistry 0620 · IGCSE · Air quality and climate

Air quality and climate — practice question

A new planet has been found, and scientists have analysed its atmosphere. The table gives the make-up of this atmosphere. Which gases occur in the planet’s atmosphere at a higher percentage than in Earth’s atmosphere?

  • Acarbon dioxide and oxygen
  • Bcarbon dioxide only
  • Cnitrogen and oxygen
  • Dnitrogen only

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