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Why is toothpaste generally mildly basic?

Answer and explanation

Correct answer: To reduce acids in the mouth

The governing concept is neutralisation of acids by a base. Bacteria can produce acids from food residues in the mouth, and these acids may attack tooth enamel. Mildly basic toothpaste helps neutralise or reduce the effect of those acids during brushing, supporting oral hygiene. Therefore, option A is correct. It does not make teeth acidic, convert saliva into gas, or turn teeth into salt; those choices describe no relevant chemical purpose.

Related tags

ScienceClass10Acids-Bases-SaltsToothpasteNeutralisationAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And Behaviour

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