How does basic toothpaste help prevent tooth decay?
Answer and explanation
Correct answer: It neutralises acids formed in the mouth
The governing concept is neutralisation. Bacteria acting on food residues in the mouth produce acids, and these acids can attack tooth enamel and begin decay. Basic toothpaste supplies alkaline substances that react with and reduce the acidity. Therefore option A is correct. Making teeth acidic or merely changing colour does not prevent acid damage, and saliva cannot be converted into a gas by toothpaste.
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What is the correct answer to this question?
It neutralises acids formed in the mouth
Why is this the correct answer?
The governing concept is neutralisation. Bacteria acting on food residues in the mouth produce acids, and these acids can attack tooth enamel and begin decay. Basic toothpaste supplies alkaline substances that react with and reduce the acidity. Therefore option A is correct. Making teeth acidic or merely changing colour does not prevent acid damage, and saliva cannot be converted into a gas by toothpaste.
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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