| Hydrochloric acid | HCl | Pickling of steel | Gastric acid secreted by stomach mainly contains HCl. |
| Nitric acid | HNO3 | Production of fertilisers | Nitric acid is produced by electric discharge in the atmosphere such as lightning. Known as Aqua Fortis in ancient times. |
| Sulphuric acid | H2SO4 | As an electrolyte in lead-acid batteries. | Known as Oil of Vitriol in ancient times. |
| Phosphoric acid | H3PO4 | Used in beverages like colas to give a tangy taste. | - |
| Hydroflouric acid | HF | Etching (writing or marking) of glass | Stored in plastic containers. |
| Carbonic acid | H2CO3 | Making of soft drinks and other bubbly drinks | CO2 in air combines with water in the ocean to form carbonic acid. Ocean acidification thus caused is of grave environmental concern. |
| Boric acid | H3BO3 | 1. Antiseptic 2. Eye wash 3. Socks and shoes to prevent athlete's foot | - |
