How does basic toothpaste reduce acidity?
Answer and explanation
Correct answer: By neutralising acid
The relevant concept is acid-base neutralisation. Acids produced by bacteria can attack tooth enamel, while the mildly basic substances in toothpaste react with and neutralise some of those acids. This reduces acidity and helps protect enamel, so option A is correct. Increasing acid would worsen decay, dissolving enamel would damage teeth, and pH zero represents extreme acidity rather than protection.
Frequently asked questions
What is the correct answer to this question?
By neutralising acid
Why is this the correct answer?
The relevant concept is acid-base neutralisation. Acids produced by bacteria can attack tooth enamel, while the mildly basic substances in toothpaste react with and neutralise some of those acids. This reduces acidity and helps protect enamel, so option A is correct. Increasing acid would worsen decay, dissolving enamel would damage teeth, and pH zero represents extreme acidity rather than protection.
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.
