Which substance contains two elements that are found in NPK fertilisers?
A.
ammonium chloride
B.
calcium hydroxide
C.
potassium nitrate
D.
sodium phosphate
Exam No：0620_s24_qp_11 Year：2024 Question No：30
Answer:
A
Knowledge points:
10.2.1. State that ammonium salts and nitrates are used as fertilisers
10.2.2. Describe the use of NPK fertilisers to provide the elements nitrogen, phosphorus and potassium for improved plant growth
Solution:
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