Toothpaste prevents tooth decay by :

Nature of calcium phosphate present in tooth enamel is :

When the soil is too basic, plants do not grow in it. To improve the quality, what must be added to the soil?

Which of the following statements is/are correct? 1. All the bases are alkali. 2. All alkalis dissolve in water. 3. Alkalis are soapy to touch, bitter in taste Select the correct answer using the cod…