Relevant Competitive Tests:
Which is the hardest substance in the human body?
A. Tooth enamelCorrect Answer
B. Skull
C. Knee cap
D. Rib
Correct Option: A. Tooth enamel
Detailed Explanation & Reference:
Enamel is the hardest substance in the human body and contains the highest percentage of minerals, 96%, with water and organic material composing the rest. The primary mineral is hydroxyapatite, which is a crystalline calcium phosphate
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