पीएच का पूरा नाम लिखकर दैनिक जीवन में महत्व बताइए कारण बताइए कि मुंह का पीएच मान 5.5 से कम होने पर दांत खराब होने की शुरू हो जाते हैं
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ph is refer to power of hydrogen.. the bacteria present in mouth break down the sugar to form acid that can cause tooth decay.it started getting corroded when the ph in mouth is lower than 5.5.
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