Question

In mdern process, manufacturing of phosphorus is occurred by
A. heating a mixlure of phosphorite mineral with sand and coke in electric furnace
B. heating calcium phosphate with coke
C. heating bone-ash with coke
D. heating the phosphate mineral with sand

Answer 1

Correct Answer - A
`Ca_(3)(PO_(4))_(2)+ 3SiO_(2) to 3CaSiO_(3)+P_(2)O_(5)`
` 2P_(2)O_(5) + 10 C to P_(4) + 10CO`