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The salt present in tooth enamel is :
Tooth decay begins at the pH of :
Tooth enamel is made up of calcium hydroxyapatite (a crystalline form of calcium phosphate). This chemical starts corroding in the mouth when the pH is :
Suggest one remedial measure each to counteract the change in pH in human beings in following cases:
Fresh milk has a pH of 6. When it changes into curd will its pH increase or decrease? Why?
The teacher while conducting practicals in the laboratory divided the students into three groups and gave them various solutions to find out their pH and classify them into acidic, basic and neutral solutions. Group A – Lemon juice, vinegar, colourless aerated drink Group B – Tomato juice, coffee, ginger juice Group C – Sodium hydroxide, sodium chloride, lime water
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