Chemistry · Oct / Nov 2023 · Paper 12 · Question 31

Some compounds that can be used as fertilisers are listed. ● ammonium nitrate ● potassium nitrate ● potassium phosphate ● sodium phosphate Three of the elements required for plant growth have the atomic symbols N, P and K. How many of these three elements are present in each of the compounds?

1. Aammonium nitrate: 1, potassium nitrate: 1, potassium phosphate: 1, sodium phosphate: 2
2. Bammonium nitrate: 1, potassium nitrate: 2, potassium phosphate: 2, sodium phosphate: 1
3. Cammonium nitrate: 2, potassium nitrate: 1, potassium phosphate: 1, sodium phosphate: 2
4. Dammonium nitrate: 2, potassium nitrate: 2, potassium phosphate: 2, sodium phosphate: 1

As printed in the paper