29. Which one of the following is not a fertilizer? A.Ammonium sulphate B.Calcium sulphate C.Calcium ammonium nitrate D.Potassium nitrate
Answer: Option B Solution: Calcium sulfate is a common laboratory and industrial chemical. In the form of -anhydrite (the nearly anhydrous form), it is used as a desiccant. It is also used as a coagulant in products like tofu. The main sources of calcium sulfate are naturally occurring gypsum and anhydrite which occur at many locations worldwide as evaporites.
