| 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. |
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| 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 |
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