BPSC Prelims and Mains Notes, BPSC Test Series
Refining of ores Metallurgy Metallurgy Metallurgy is the process of obtaining metals from ores. It may be defined as the processes which are involved in the extraction of metals from their ores and then refining them for use are known as metallurgy. Steps of Metallurgy: Metals can be extracted from their ores by following processes: Enrichment of … Read more
Minerals Minerals are defined as solid, inorganic, naturally occurring substances with a definite chemical formula and general structure. Almost all chemical elements in the Earth’s crust are associated with at least one mineral. They vary in color, hardness, density, crystal form, crystal size, transparency, composition, location, and abundance. Some minerals are radioactive (uranophane), while others … Read more
BIHAR Nitish bats for EBC quota in central jobs, varsities Chief minister Nitish Kumar on pitched for separate reservation for the EBCs (extremely backward classes) in the central government’s appointments as well as admissions in central education institutions on the line of Bihar government’s Karpoori formula. The Centre currently provides 27% reservation to OBCs (other backward classes), which include … Read more