Which of the following salt of Calcium is used in the preparation of super phosphate of lime ?

Ca₃(PO₃)₂ (Calcium phosphite)

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Ca₃(PO₄)₂ (Calcium phosphate)

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Ca(HPO₄)₂ (Calcium mono-hydrogen phosphate.)

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CaSO4 (Calcium sulphate)

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Solution

The correct option is B
Ca₃(PO₄)₂ (Calcium phosphate)

Super phosphate of lime (Ca₃(H₂PO₄)₂ )
It is a widely used as phosphatic fertilizer
Preparation of Super phosphate of lime:
Which is prepared by treating Calcium phosphate with concentrated sulphuric acid.
${Ca}_{3} {({PO}_{4})}_{2} (s) + H_{2} {SO}_{4} (aq) \to 2 {CaSO}_{4} (aq) + Ca {(H_{2} {PO}_{4})}_{2} (aq) Calcium Sulphuric acid Calcium super phosphate phosphate sulphate of lime$
Conclusion: Therefore Ca₃(PO₄)₂ (Calcium phosphate) is used in the preparation of Super phosphate of lime

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