Multiple choice

Which of the following fertilizers has the highest percentage of nitrogen?

  1. Calcium ammonium nitrate

  2. Ammonium sulphate

  3. Calcium nitrate

  4. Urea
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D Correct answer
Explanation

Urea (CO(NH2)2) contains approximately 46% nitrogen by mass, which is the highest among all common nitrogen fertilizers. Calcium ammonium nitrate contains about 27-28% nitrogen, ammonium sulphate contains 21%, and calcium nitrate contains about 15-17%. The high nitrogen content makes urea an efficient and economical choice for farmers.

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