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प्रश्न
Tooth decay is caused by the presence of a base.
विकल्प
True
False
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उत्तर
This statement is False.
Explanation:
Tooth decay is caused by the presence of an acid.
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संबंधित प्रश्न
Name an indicator which is pink in alkaline solution but turns colourless in acidic solution.
Give the names and formulae of two strong acids and two weak acids.
What is produced if an acid is added to a base?
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(a) wasp
(b) ant
(c) honey bee
(d) nettle leaf hair
Write the chemical formula of ammonium chloride. Explain why an aqueous solution of ammonium chloride is acidic in nature? Illustrate your answer with the help of a chemical equation.
Give two examples of the following:
hydracids
Name an acid used as an eyewash.
Choosing the correct words given in brackets, complete the sentence given below:
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Zn + 2 HCl → ZnCl2 +_____↑
Phenolphthalein is a synthetic indicator and its colours in acidic and basic solutions, respectively are ______.
