What is the main purpose of keeping toothpaste mildly basic?
Answer and explanation
Correct answer: To reduce acids formed in the mouth
Bacteria acting on food particles in the mouth can produce acids. These acids lower mouth pH and may gradually weaken tooth enamel. Mildly basic substances in toothpaste can neutralise or reduce some of this acidity, helping restore a less acidic environment during cleaning. Thus option A states the purpose correctly. Toothpaste is not intended to acidify teeth, convert them into salt, or stop saliva, so B, C, and D are unsuitable.
Frequently asked questions
What is the correct answer to this question?
To reduce acids formed in the mouth
Why is this the correct answer?
Bacteria acting on food particles in the mouth can produce acids. These acids lower mouth pH and may gradually weaken tooth enamel. Mildly basic substances in toothpaste can neutralise or reduce some of this acidity, helping restore a less acidic environment during cleaning. Thus option A states the purpose correctly. Toothpaste is not intended to acidify teeth, convert them into salt, or stop saliva, so B, C, and D are unsuitable.
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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