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Calcium phosphate is present in tooth en...

Calcium phosphate is present in tooth enamel. Its nature is

A

basic

B

acidic

C

neutral

D

amphoteric

Text Solution

Verified by Experts

The correct Answer is:
A
Calcium phosphate `Ca_(3)(PO_(4))_(2)` is basic salt as it is a salt of weak acid (phosphoric acid) and slightyl stonger abse (Calcium hydroixde) (though both are weak ) . Also when pH of out mouth falls below 5.5 dure to eting of sweets etc i.e mouth is acidic ithe dissolution of ename (Calcium phosphate) starts which shown that calcium phosphate is basic in nature.
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Knowledge Check

  • The hardest substance present in a tooth is

    A
    crown
    B
    enamel
    C
    dentine
    D
    cement

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