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Why does tooth decay start when the pH o...

Why does tooth decay start when the pH of mouth is lower than 5.5?

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Tooth decay start when the pH of the mouth is lower than-

Assertion (A) : Tooth decay starts when the pH of the mouth is lower than 5.5. Reason : Bacteria present in mouth produce bases.

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BEYOND PUBLICATION-ACIDS,BASES AND SALTS-EXERCISE
  1. What is a neutralization reaction? Give two examples

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  2. How does the flow of acid rain into a river make the survival of aquat...

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  3. Why does tooth decay start when the pH of mouth is lower than 5.5?

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  4. Which of the following is the most accurate way of showing neutralizat...

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  5. Why is universal indicator a better one Than litmus paper ?

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  6. Which of the following is used for making toys ?

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  7. Brine solution is called

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  8. Tooth decay start when the pH of the mouth is lower than-

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  9. The chemical formula of hydrated copper sulphate is-

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  10. If the pH value of a solution is 12, then the character of solution of...

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  11. Which of the following is used in cakes or pastries to making them lig...

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  12. Which salt is used in the manufacture of borax?

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  13. Which of the following is the reason for the bluish green colour solut...

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  14. Excess of sodium hydroxide reacts with zinc to form

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  15. is a mild non-corrosive base.

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  16. Which of the following is the weakest acid ?

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  17. Formula of bleaching powder

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  18. Which of the following gas is liberated, when sodium carbonate is reac...

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  19. Which one of the following is the weakest base?

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  20. Because which of the absence of following ions, in the glucose and alc...

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