Question

Which of the following are types of artificial fertilizers?

• A. Nitrogenous fertilizers
• B. Calcium fertilizers
• C. Phosphatic fertilizers
• D. Potassium fertilizers

Answer 1

Answer: (A), (C), (D)

The correct options are
A Nitrogenous fertilizers
C Phosphatic fertilizers
D Potassium fertilizers

There are three types of artificial fertilizers. They are:

1. Nitrogen fertilizers: Nitrogen fertilizers are made from ammonia ($N{H}_3$), which is sometimes injected into the ground directly.
   
2. Phosphate fertilizers: All phosphate fertilizers are obtained by extraction from minerals containing the anion $P{O}_4^{3-}$. In rare cases, fields are treated with the crushed mineral, but most often more soluble salts are produced by chemical treatment of phosphate minerals. The most popular phosphate-containing minerals are referred to collectively as phosphate rock.
   
3. Potassium fertilizers: Potash is a mixture of potassium minerals used to make potassium (chemical symbol: K) fertilizers. Potash is soluble in water, so the main effort in producing this nutrient from the ore involves some purification steps; e.g., to remove sodium chloride (NaCl) (common salt). Sometimes potash is referred to as $K_{2}O$, as a matter of convenience to those describing the potassium content. In fact potash fertilizers are usually potassium chloride, potassium sulfate, potassium carbonate, or potassium nitrate.