Question

Assertion: tooth decay starts when the pH of the mouth is lower than 5.5

Reason: enamel starts corroding below 5.5 pH ​

Answer 1

Explanation:

When the pH in the mouth falls below 5.5, tooth decay starts. Bacteria present in the mouth produce acid by degradation of sugar and food particles which .

Answer 2

Explanation:

Option A

Both Assertion and Reason is correct and Reason is the correct explanation of the Assertion

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