4 uses of acid and base...fast
Answers
Acid:
A dilute solution of acetic acid is known as vinegar, which is used in processing food and drink.
Hydrochloric acid, which is present in your stomach, participate in the hydrolysis of protein. It is also used for producing PVC, a common type of plastic.
Nitric acid and sulfuric acid is used for manufacturing fertiliser.
Citric acid is used in food industry to imitate lemon flavour.
Base:
Ammonia is used for manufacturing fertiliser.
Sodium hydroxide can be used to remove sulfurous impurities in crude oil. It's important to do this, because these impurities not only reduce the efficiency of engine using the oil, but also damaging distilling equipment. Another important use is to make soap by saponification reaction.
Calcium hydroxide is used in sewage treatment (it precipitates heavy metals), treating acidic soil. Where I live it is also used as an alternative for painting (the base will absorb atmospheric carbon dioxide, forming a stable layer of calcium carbonate on wall).
Some organic superbases are used for organic compound synthesis.
Hope this helps!!