Q1: Triple superphosphate is made by reacting phosphate rock with __________ acid.

ANS:A - phosphoric

Phosphoric acid (H3PO4) is a clear, odorless liquid with a sour taste, composed of phosphorus, hydrogen, and oxygen. In the context of fertilizer production, phosphoric acid plays a crucial role in the creation of various phosphate-based fertilizers. Phosphoric acid is commonly used in the production of several types of phosphate fertilizers, including single superphosphate (SSP), diammonium phosphate (DAP), and triple superphosphate (TSP). However, it's important to note that phosphoric acid itself is not typically used directly as a fertilizer; instead, it serves as a precursor in the manufacturing process. In the case of triple superphosphate (TSP), phosphoric acid is not the primary reactant used in its production. Instead, TSP is made by reacting phosphate rock with sulfuric acid. This process results in the formation of water-soluble monocalcium phosphate, which is then concentrated and solidified to form TSP granules. TSP is a highly concentrated phosphate fertilizer, rich in phosphorus content, and readily available for plant uptake. Phosphoric acid is utilized more commonly in the production of other phosphate fertilizers, such as single superphosphate (SSP) and diammonium phosphate (DAP). In these processes, phosphoric acid reacts with phosphate rock or ammonia to produce the respective fertilizers. Overall, while phosphoric acid is an essential component in the manufacturing of phosphate fertilizers, it is sulfuric acid that is predominantly used in the production of triple superphosphate.