Which of the following statement is correct about the uses of Sodium chloride Statement I: It is used in the manufacture of soap. Statement II: It is used as a preservative in pickles.?

Option 3 : Both are correct

The correct answer is 3 i.e. Both are correct.

Explanation:

• Sodium Chloride (Common salt) is used as a raw material for making a large number of useful chemicals industry such as caustic soda, washing soda, baking soda, hydrochloric acid, and chlorine. 

Complete step by step solution:

• The process of manufacturing of soap is known as saponification.
• Soaps are sodium or potassium salts of long chains of fatty acids which contain more than 12 carbon atoms.
• In saponification, fats or oils are first hydrolysed by using sodium hydroxide, NaOH or potassium hydroxide, KOH to form a solution of glycerol and fatty acids.
• Soap is then precipitated from the solution by adding salt like sodium chloride, NaCl, potassium chloride, KCl, etc.
• Common salt is used in cooking food. It improves the flavor of food.
  • Sodium chloride is required by our body for the working of the nervous system, the movement of muscles, and the production of hydrochloric acid in the stomach for the digestion of food.
• Common salt is used as a preservative in pickles, and in curing meat and fish (preserving meat and fish). 
• Common salt is used in the manufacture of soap.
• Common salt is also used to melt ice which collects on the roads during the winter in cold countries.