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Types of Chemical Reactions — Science STD 10 — Question

Tamilnadu BoardEnglish MediumSTD 10ScienceTypes of Chemical Reactions1 Mark
Question
Why the toothpastes are generally basic in nature?
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Answer

The pH of the saliva is usually between 6.5 to 7.5, when the pH of the mouth saliva falls below 5.5 the enamel coating of our teeth calcium phosphate gets weathered. That is why the tooth pastes are generally basic in nature.

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