Question

Phosphorus in DAP is

• A. 25%
• B. 60%
• C. 18%
• D. 46%

Hint:

Fertilizer composition:
- DAP: 18% N, 46% P$_2$O$_5$.
- Urea: 46% N.
- SSP: 16% P$_2$O$_5$.
- MOP: 60% K$_2$O.

Answer 1

The Correct Option is D

Step 1: Understanding the Question:
This question tests knowledge of fertilizer composition.

Step 2: Detailed Explanation:
DAP (Diammonium phosphate) contains 46% phosphorus (D).
Its chemical formula is (NH$_4$)$_2$HPO$_4$.
The nutrient content of DAP is:
- Nitrogen (N): 18%
- Phosphorus (P$_2$O$_5$): 46%
Other options:
- 25% (A): Not DAP.
- 60% (B): Not DAP.
- 18% (C): Nitrogen content of DAP.
Thus, phosphorus in DAP is 46%.

Step 3: Final Answer:
Thus, phosphorus in DAP is 46%, which corresponds to option (D).
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