• question_answer White enamel of our teeth is [Bihar CEE 1995] A) $C{{a}_{3}}{{(P{{O}_{4}})}_{2}}$ B) $Ca{{F}_{2}}$ C) $CaC{{l}_{2}}$ D) $CaB{{r}_{2}}$

Solution :

The enamel of our teeth is the hardest substance in the body made up of $Ca{{F}_{2}}$ and dentine below it made of $C{{a}_{3}}{{(P{{O}_{4}})}_{2}}$.

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