Common salt is an essential nutrient that is used in healthcare to help patients stay hydrated.
It is used as a food preservative as well as a flavour enhancer.
Common salt is also used in the production of plastics and other products.
It is also employed in the de-icing of roads and sidewalks.
Final Answer:
Common salt’s two uses:
(a) It is used in the production of soap.
(b) It is used in the preparation of food.