That is a very open question because there are many non metals with diverse uses(mostly its their compounds). Here, am only going to mention a few. The most widely used non metal in my opinion is oxygen which is used in : 1. combustion 2. read more
Uses of Non-Metals in Daily Life Many of the non-metals are present in the air we breathe and many of them are present in dry atmospheric air we see around us in volume percentage. Nitrogen which is present in 78% volume wise is an important element. read more
Uses of Non-Metals Non-metallic compounds, such as cement and glass have innumerable uses in modern civilisation. Hydrogen is used in the hydrogenation of vegetable oils to make vegetable ghee. read more