Name the chemical compound which is used as a disinfectant for water.

Sea water contains many salts dissolved in it. How can the salt that we use in food is obtained?

What is ‘chlor-alkali’ process and what products are formed during this process?

When a sodium compound X which is also used in soda-fire extinguisher is heated, gives a sodium compound Y along with water and carbon dioxide. Y on crystallisation forms compound Z. Identify X, Y and Z.

Write the chemical formula of blue vitriol.