Why is toothpaste generally made mildly basic for tooth protection?
Answer and explanation
Correct answer: To neutralise acid formed in the mouth
Bacteria in dental plaque can break down food sugars and produce acids. The governing concept is acid-base neutralisation: these acids can attack and demineralise tooth enamel, whereas a mildly basic toothpaste helps neutralise some of the acid and supports oral protection. Hence option A is correct. Toothpaste is not intended to dissolve enamel, force the pH to 1, or make food more acidic.
Frequently asked questions
What is the correct answer to this question?
To neutralise acid formed in the mouth
Why is this the correct answer?
Bacteria in dental plaque can break down food sugars and produce acids. The governing concept is acid-base neutralisation: these acids can attack and demineralise tooth enamel, whereas a mildly basic toothpaste helps neutralise some of the acid and supports oral protection. Hence option A is correct. Toothpaste is not intended to dissolve enamel, force the pH to 1, or make food more acidic.
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.
