1. Sulphuric acid is a chemical compound and it's formula is H2SO4. Two atoms of Hydrogen, one atom of Sulphur and 4 atoms of oxygen make up Sulphuric acid. It can be used as a bleaching agent and disinfectant. It has a very strong and suffocating odor!

2. A heavy, oily, colourless to dark brown liquid produced by adding sulphur trioxide to concentrated sulphuric acid. It is used in petroleum refining and the manufacture of explosives.Chemical formula:H2S2O7. 3. Nitric acid is a type of mineral acid that is characteristically highly toxic and also very corrosive. Nitric acid is colourless when pure and it is also known by terms such as aqua fortis and spirit of nitre. HNO3 4. Citric acid is a weak organic acid with the formula C6H8O7. It is a natural preservative/conservative and is also used to add an acidic or sour taste to foods and drinks. 5. Carbonic acid is the chemical compound with the formula H2CO3. It is also a name sometimes given to solutions of carbon dioxide in water, because such solutions contain small amounts of H2CO3.