Etampawala,Thusitha2025-02-182025-02-182018-01https://dr.ichemc.ac.lk/handle/123456789/242Guest Article Page 10-12Silica is one of the multipurpose chemical compounds that exist in gel, crystalline and amorphous forms. T he major industries where silica uses are rubber industry especially the tyre manufacturing, pharmaceuticals, cosmetics, paints, printing tonners and so on.enSilicaRice HuskAgro-wastesValue AdditionArticle