To prevent tooth decay, one is advised to brush the teeth regularly. The ingredient of the paste which checks tooth decay is:
A
acidic
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B
basic
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C
neutral
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D
corrosive
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Solution
The correct option is Bbasic Tooth decay occurs due to increased acidity inside the mouth. Toothpaste contains mildly basic ingredients that neutralize the acids in the mouth and this prevents degradation of enamel.