A nitrogenous fertiliser contains 20% N2. It could be_________________?
Correct answer: B. Calcium ammonium nitrate (CAN)
- A. Ammonium nitrate
- B. Calcium ammonium nitrate (CAN)
- C. Urea
- D. Ammonium chloride
Explanation
Calcium ammonium nitrate is commonly marketed with about 20.5% nitrogen, matching the stated approximately 20% nitrogen content. Pure ammonium nitrate and urea contain about 35% and 46% nitrogen, respectively.
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