Question

_______ (Phosphate/Sedimentary) rock is the main ingredient used in the preparation of superphosphate of lime.

Answer 1

Sulfuric acid is made by converting elemental sulfur to sulfur trioxide, which added with water, is dissolved in sulfuric acid to produce more acid.

Finely ground rock phosphate and sulfuric acid are mixed in a den to produce superphosphate, which is then granulated and dried.

Therefore, phosphate rock is the main ingredient used in the preparation of the superphosphate of lime.