How does basic toothpaste help prevent tooth decay?
Answer and explanation
Correct answer: By neutralising acid formed in the mouth
Bacteria in the mouth can break down sugars and produce acids. These acids lower the pH around the teeth and gradually dissolve minerals from enamel, causing decay. A mildly basic toothpaste reacts with and neutralises some of the acid, helping the mouth return toward a safer pH and protecting enamel. Therefore option A is correct; the other options would either damage enamel or describe an incorrect effect.
Frequently asked questions
What is the correct answer to this question?
By neutralising acid formed in the mouth
Why is this the correct answer?
Bacteria in the mouth can break down sugars and produce acids. These acids lower the pH around the teeth and gradually dissolve minerals from enamel, causing decay. A mildly basic toothpaste reacts with and neutralises some of the acid, helping the mouth return toward a safer pH and protecting enamel. Therefore option A is correct; the other options would either damage enamel or describe an incorrect effect.
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.
Student feedback
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
