Question

Compound P forms enamel of teeth. It is the hardest substance of the body. It does not dissolve in water but it is corroded when pH in the mouth is below 5.5. How does tooth paste prevent dental decay?
(a) tooth paste has flouride ion which makes the medium basic
(b) tooth paste has fluoride ion makes the medium acidic
(c) thooth paste has fluoride ion which makes the medium neutral
(d) tooth paste has basic compounds which makes the medium neutral

Answer 1

Heya user


ur answer follows....

Compound P forms enamel of teeth. It is the hardest substance of the body. It does not dissolve in water but it is corroded when pH in the mouth is below 5.5.

the substance P is

calcium carbonate

CaCO3


tooth paste prevent dental decay as it has basic compounds which makes the medium neutral


hope this will help u


Regards
Divya

^_^

Answer 2

Answer:

P = Ca3 (PO4)2. Bacteria present in the mouth produce acids by degradation of

sugar and food particles remaining in the mouth after eating. Using toothpastes, which

are generally basic, for cleaning the teeth can neutralize the excess acid and prevent

tooth decay.

mrk as brainliest