Which one of the following is not used as fertilizer?
Ammonium nitrate
Ammonium sulphide
Ammonium phosphate
Ammonium sulphate
Answer is Wrong!
Answer is Right!
This question was previously asked in
UPSC NDA-2 – 2018
A) Ammonium nitrate (NH₄NO₃) is a common nitrogen fertilizer.
B) Ammonium sulphide ((NH₄)₂S) contains nitrogen and sulfur, but it is highly unstable and decomposes easily to ammonia and hydrogen sulfide gas. Due to its instability and potential toxicity (hydrogen sulfide), it is not used as a common agricultural fertilizer.
C) Ammonium phosphate (e.g., (NH₄)₂HPO₄ or NH₄H₂PO₄) are common fertilizers (like DAP and MAP) providing both nitrogen and phosphorus.
D) Ammonium sulphate ((NH₄)₂SO₄) is a common fertilizer providing nitrogen and sulfur.
Therefore, Ammonium sulphide is not used as a fertilizer.