In modern process phosphorus is manufactured by [CPMT 1974, 78, 81]

1.	In modern process phosphorus is manufactured by [CPMT 1974, 78, 81]
A.	Heating a mixture 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» B. Heating calcium phosphate with coke

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In modern process phosphorus is manufactured by [CPMT 1974, 78, 81]

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