Which of the following is not a nitrogenous fertiliser? A. Ammonium sulphate B. Urea C. Ammonium nitrate D. Super phosphate

The correct answer is D. Super phosphate.

Ammonium sulphate, urea, and ammonium nitrate are all nitrogenous fertilizers. Super phosphate is a phosphate fertilizer.

Ammonium sulphate is a white, crystalline solid that is soluble in water. It is a common fertilizer that is used to provide nitrogen to

plants. Urea is a white, crystalline solid that is also soluble in water. It is a very concentrated form of nitrogen and is often used as a foliar fertilizer. Ammonium nitrate is a white, crystalline solid that is also soluble in water. It is a strong oxidizer and can be explosive if mixed with other materials.

Super phosphate is a mixture of calcium sulfate and phosphoric acid. It is a common fertilizer that is used to provide phosphorus to plants.