Home › Junior Science Olympiad › Chemistry › Acids Bases and Salts › A dentist suggests a basic toothpaste after meal…
A dentist suggests a basic toothpaste after meals because it will:
ANeutralise acid
BNeutralise sugar
CNeutralise water
DNeutralise enamel
Answer & Solution
Correct answer: A. Neutralise acid
1. Acid in the mouth causes the decay.
2. A base cancels that acid out.
3. So the toothpaste neutralises acid.
_Source: syllabus Science Class X, Chapter 2, Acids, Bases and Salts._
Related questions
A doctor sets a fractured arm with a white powder that hardens with water. It is:Blue copper sulphate crystals turn white on heating. The molecules driven off are:A bee sting leaves acid in the skin. Rubbing on baking soda helps because it is a mild:Tooth enamel begins to corrode once the pH inside the mouth falls below:Rain water is tested and its pH is below 5.6. This rainfall is called:A doctor notes the human body works only within a narrow pH range, roughly:Hydrochloric acid gives far more hydrogen ions than acetic acid at equal strength. So it iAs the hydronium ion concentration in a solution rises, the pH value: