Q

What is tooth enamel mainly made of?

RRB NTPC (Stage-I); RRB NTPC (Stage-I) 22/04/2016 / Shift III; 29/04/2016 / Shift I 2016; 2016
✓ Answer: D Calcium phosphate
Enamel consists mainly of hydroxyapatite, a calcium phosphate mineral.
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