Calcium phosphate is present in tooth enamel. Its nature is:
A. Basic
B. Acidic
C. Neutral
D. Amphoteric
Answer:A
Calcium phosphate is present in tooth enamel. Its nature is:
A. Basic B. Acidic C. Neutral D. Amphoteric
Explanation: Calcium phosphate Ca3(PO4)2 is a basic salt, as it is formed by the combination of a weak acid (phosphoric acid) and a slightly stronger base (calcium hydroxide).