Why is toothpaste generally mildly basic?
Answer and explanation
Correct answer: To reduce acids in the mouth
The governing concept is neutralisation of acids by a base. Bacteria can produce acids from food residues in the mouth, and these acids may attack tooth enamel. Mildly basic toothpaste helps neutralise or reduce the effect of those acids during brushing, supporting oral hygiene. Therefore, option A is correct. It does not make teeth acidic, convert saliva into gas, or turn teeth into salt; those choices describe no relevant chemical purpose.
Frequently asked questions
What is the correct answer to this question?
To reduce acids in the mouth
Why is this the correct answer?
The governing concept is neutralisation of acids by a base. Bacteria can produce acids from food residues in the mouth, and these acids may attack tooth enamel. Mildly basic toothpaste helps neutralise or reduce the effect of those acids during brushing, supporting oral hygiene. Therefore, option A is correct. It does not make teeth acidic, convert saliva into gas, or turn teeth into salt; those choices describe no relevant chemical purpose.
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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