Question

Superphosphate of lime is
A. A mixure of normal calcium phosphate and gypsum
B. A mixure of primary calcium phosphate and gypsum
C. Normal calcium phosphate
D.

Answer 1

Correct Answer - B
Superphophate of lime: It is a mixure of calcium dihydrogen phosphate and gypsum and is obtained by treating phosphatic rock will conc. `H_(2)SO_(40`
`Ca_(3)(PO_(4))_(2)+2H_(2)SO_(4)+5H_(2)O`
`rarrunderset("Superphosphate of lime")(Ca(H_(2)PO_(4))_(2).2H_(2)O)+2CaSo_(4)0.2H_(2)O`