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Assertion: The deficiency of fluoride in...

Assertion: The deficiency of fluoride in drinking water cause disease such as tooth decay etc.
Reason: The `F^(-)` ions make the enamel on teeth much harder by converting hydroxyapatite, the enamal on the surface of the teeth, into much harder fluorapatite.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true and the reason is not the correct explanation of the assertion.

C

If assertion is true but reason is false.

D

If assertion is false but reason is true.

Text Solution

Verified by Experts

The correct Answer is:
A
`[3(Ca_(3)(PO_4)_(2) gt Ca(OH)_(2)] underset(F^(-))(rarr) [3Ca_(3)(PO_4)_(2).CaF_(2)]`
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