Q874
The chemical substance present in bones and teeth is
A.
Calcium phosphate
AnswerB.
Calcium chloride
C.
Calcium sulphate
D.
Calcium borate
Answer: Option A
Solution
Answer: Option A
Solution:
Seventy percent of bone consists of hydroxyapatite, a calcium phosphate mineral (known as bone mineral). Tooth enamel is composed of almost ninety percent hydroxylapatite.