Sulphuric acid (H₂SO₄) is a highly corrosive, dense liquid known as the “king of chemicals” due to its extensive industrial use. Colorless to slightly yellow, it is produced via the Contact Process, where sulphur dioxide (SO₂) is oxidized and dissolved in water.Widely used in fertilizer production (e.g., ammonium sulphate), it is also vital in petroleum refining, metal processing, and chemical manufacturing. Its dehydrating properties make it valuable for cleaning metals and producing other compounds.Sulphuric acid powers lead-acid batteries, neutralizes alkaline substances in wastewater, and supports many industrial processes. However, it is hazardous, causing severe burns and emitting toxic fumes if mishandled. Proper storage and safety protocols are essential. Its production reflects a nation’s industrial growth and capacity.