Question

Match List - I with List - II.

List - I (Phosphatic fertilizer)	List - II (Total P2O5 content)
A. Rock Phosphate B. Di Calcium Phosphate C. Mono-ammonium phosphate D. Single superphosphate	I. 16% II. 48% III. 34% IV. 27%

• A. A-IV, B-I, C-II, D-III
• B. А-І, В-II, C-III, D-IV
• C. A-IV, B-III, C-II, D-I
• D. A-I, B-IV, C-II, D-III

Hint:

SSP (16%) is the benchmark for phosphatic fertilizers. If you remember SSP and MAP (the highest at 48%), matching the rest becomes much easier in MCQ formats.

Answer 1

The Correct Option is C

Concept: Agribusiness and agronomy require precise knowledge of the nutrient composition of fertilizers to calculate application rates. Phosphatic fertilizers are valued based on their Phosphorus pentoxide ($P_{2}O_{5}$) equivalent.

Step 1: Match the standard Phosphatic fertilizer (D).
Single Superphosphate (SSP) is a staple fertilizer in India. Its standard grade contains exactly 16% $P_{2}O_{5}$. Thus, D matches with I.

Step 2: Identify high-analysis fertilizers (B and C).
1. Mono-ammonium phosphate (MAP) (C): This is a high-grade fertilizer typically containing 48% $P_{2}O_{5}$. Thus, C matches with II.
2. Di Calcium Phosphate (B): This contains approximately 34% $P_{2}O_{5}$. Thus, B matches with III.

Step 3: Identify the raw material (A).
Rock Phosphate (A) is the natural ore used to produce other P-fertilizers. Its content varies but standard ground rock phosphate is around 27% $P_{2}O_{5}$. Thus, A matches with IV.

Step 4: Final Alignment.
The sequence A-IV, B-III, C-II, D-I corresponds to Option (3).