# Main constituent of phosphate rock is_____________________? with Answer - Chemical Engineering Mcqs | TestPrep

> Solved MCQ: Main constituent of phosphate rock is_____________________? Correct Answer: B. Flour apatite. Verified answer explanation for FPSC, PPSC, MDCAT, NTS, and CSS competitive exam preparation.

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# Main constituent of phosphate rock is_____________________?

Direct Answer & Quick Reference

The correct option is **B. Flour apatite**.

A. Ammonium phosphate

B. Flour apatiteCorrect Answer

C. Calcium fluoride

D. Calcium phosphate

Verified Key: B. Flour apatite
Solved by 2,059+ students

Verified against official examination board answer keys and standard curriculum textbooks.

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