
Limescale is a hard deposit that can block pipes. Limescale is mainly formed from calcium carbonate, which is a base. Limescale remover contains an acid, often hydrochloric acid, which reacts with the limescale to form calcium chloride. Water and carbon dioxide are also produced.
Which of the products is a salt?
Important Questions on Acids, Bases and Salts

Choose the method of preparation of Sodium nitrate, from the methods given in the list:
[List: A. Neutralization B.Precipitation C.Direct combination D.Substitution]



Write a balanced chemical equation the following reaction:
Action of dilute sulphuric acid on sodium hydroxide.







Give reasons for the following statements: (i) Milk of magnesia is used for the treatment of acidity in the stomach.

What happens when: (write chemical equation only).
(ii) Sulphuric acid reacts with caustic soda








