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प्रश्न
Explain why the pH in a person's mouth becomes lower after each meal.
उत्तर
After each meal, sugar present in the food is broken down into acids by the bacteria present in the mouth. Acids have a pH less than 7, and as the acidity increases, the pH decreases. Thus, the pH in a person’s mouth becomes lower after each meal.
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संबंधित प्रश्न
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