Why is toothpaste made mildly basic?
Answer and explanation
Correct answer: To reduce acid in the mouth
Bacteria can produce acids from sugars left in the mouth after eating. These acids lower the local pH and may gradually damage tooth enamel. Mildly basic toothpaste helps neutralise or reduce the effect of these acids without being strongly caustic. It is not intended to make teeth acidic, colour the tongue, or convert saliva into gas. Thus option A correctly states its purpose.
Frequently asked questions
What is the correct answer to this question?
To reduce acid in the mouth
Why is this the correct answer?
Bacteria can produce acids from sugars left in the mouth after eating. These acids lower the local pH and may gradually damage tooth enamel. Mildly basic toothpaste helps neutralise or reduce the effect of these acids without being strongly caustic. It is not intended to make teeth acidic, colour the tongue, or convert saliva into gas. Thus option A correctly states its purpose.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
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