How does basic toothpaste help prevent tooth decay?
Answer and explanation
Correct answer: It neutralises excess acid in the mouth
The governing concept is neutralisation. Bacteria can produce acids from food residues, and these acids attack tooth enamel. A basic toothpaste reacts with or neutralises some of this excess acid, helping the mouth move toward a less acidic pH and protecting enamel. Thus option A is correct. Toothpaste does not turn teeth into acid, remove all oral water, or fill teeth with carbon dioxide.
Frequently asked questions
What is the correct answer to this question?
It neutralises excess acid in the mouth
Why is this the correct answer?
The governing concept is neutralisation. Bacteria can produce acids from food residues, and these acids attack tooth enamel. A basic toothpaste reacts with or neutralises some of this excess acid, helping the mouth move toward a less acidic pH and protecting enamel. Thus option A is correct. Toothpaste does not turn teeth into acid, remove all oral water, or fill teeth with carbon dioxide.
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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