

Fertiliser Technology - Engineering
Q1: Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodiumA carbonate
B phosphate
C bicarbonate
D silicate
ANS:A - carbonate Carbonate is a chemical compound containing the carbonate ion (𝐶𝑂32−CO32−). It is a polyatomic ion composed of one carbon atom bonded to three oxygen atoms in a trigonal planar arrangement. The carbonate ion carries a negative two charge (2−2−) due to its two additional electrons. Carbonate compounds are abundant in nature and have various industrial, biological, and geological applications. Some common examples of carbonates include:
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