Assertion : If the pH inside the mouth decreases below5.5, the decay ...
Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
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Assertion : If the pH inside the mouth decreases below5.5, the decay ...
It's option a because when bacteria is acting upon the food it obviously state that ph value in mouth is below 5.5 due to the acidity in our mouth bacteria gets the change to degrade our mouth
Assertion : If the pH inside the mouth decreases below5.5, the decay ...
Assertion: If the pH inside the mouth decreases below 5.5, the decay of tooth enamel begins.
Reason: The bacteria present in the mouth degrades the sugar and leftover food particles and produce acids that remain in the mouth after eating.
Explanation:
Introduction:
Tooth decay is a common dental problem that occurs when the enamel, the outer layer of the tooth, is damaged and eroded by acid produced by bacteria in the mouth. The pH scale is used to measure the acidity or alkalinity of a solution. A pH value below 7 is considered acidic, while a pH value above 7 is considered alkaline. The pH level inside the mouth plays a crucial role in determining the risk of tooth decay.
Explanation of Assertion:
The assertion states that if the pH inside the mouth decreases below 5.5, the decay of tooth enamel begins. This assertion is true. Enamel is the hardest substance in the human body, but it can be damaged by acid. When the pH level in the mouth drops below 5.5, the acidic environment starts to demineralize the enamel, leading to tooth decay.
Explanation of Reason:
The reason given for the assertion is that the bacteria present in the mouth degrade the sugar and leftover food particles and produce acids that remain in the mouth after eating. This reason is also true. The bacteria in the mouth feed on the sugars and carbohydrates present in the food particles left behind after eating. As a byproduct of their metabolism, the bacteria produce acids, such as lactic acid and acetic acid. These acids lower the pH level in the mouth, creating an acidic environment.
Explanation of the Relationship:
The reason given provides a correct explanation for the assertion. The bacteria in the mouth produce acids that lower the pH level, and when the pH drops below 5.5, the tooth enamel starts to decay. The acidic environment created by the bacteria's acid production is harmful to the enamel and leads to its demineralization.
Conclusion:
Based on the explanation provided, it can be concluded that both the assertion and the reason are true, and the reason is the correct explanation of the assertion. Therefore, the correct answer is option 'A'.
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