A farmer has four different compounds used in fertilisers. Which two compounds are combined to produce an NPK fertiliser?
- A1 and 2
- B1 and 4
- C2 and 3
- D3 and 4
Chemistry 0620 · IGCSE · Fertilisers
A farmer has four different compounds used in fertilisers. Which two compounds are combined to produce an NPK fertiliser?