Group 12 element people in the 17th century. German chemist Andreas Marggraf is usually given credit for discovering pure metallic zinc in a 1746 experiment by heating a mixture of calamine and charcoal in a closed vessel without copper to obtain a metal. Experiments on frogs by the Italian doctor Luigi Galvani in 1780 with brass paved the way for the discovery of electrical batteries, galvanization and cathodic protection. In 1880, Galvani's friend, Alessandro Volta, invented the Voltaic pile. The biological importance of zinc was not discovered until 1940 when carbonic anhydrase, an enzyme that scrubs carbon dioxide from blood, was shown to
Khanozai making stainless steel. The Chromite Ore extracted in mountains of Khanozai and Muslim Bagh region consists 44.7 to 59.1 % of the Chromium. (Bilgrami, 1969). From Islamic Jurisprudence point of view, those extracted metallic minerals which are melted by fire in order to use them are subjected to Khumas (One-fifth or 20 %)- a type of Zakat, therefore, Chromite as a metallic mineral does fall in this category for which Khumas is necessary to be paid to the people mentioned in the Quran and hadith of Muhammad (Sahih Al Bukhari). The support to vulnerable groups of society such as widows,