Choose the correct combination of the following

Options

A. Superphosphate of lime :
`Ca(H_(2)PO_(4))_(2).H_(2)O=2MgSO_(4).7H_(2)O`
B. Triple phosphate : `Ca(H_(2)PO_(4))_(2)`
C. Thomas slag : `P_(4)O_(10)+Ca_(3)(PO_(4))_(2)+Ca(NO_(3))_(2)`
D. Nitrophosphate : `Ca_(3)(PO_(4))_(2)+2Ca(NO_(3))_(2)`

Answer

B

Explanation

Superphosphate of lime:
`Ca(H_(2)PO_(4))_(2) H_(2)O +2 (CaSO_(4).2H_(2)O)`
Thomas slag: `P_(4)O_(10) +Ca_(3) (PO_(4))_(2) +CaSiO_(3)`
Nitrophosphate: `Ca(H_(2)PO_(4))_(2) +2Ca (NO_(3))_(2)`