If you remember we have done a similar process before of removing impurities during concentration of ores. Explain how the developing embryo gets nourishment inside the mother's body. Once the extraction process is complete we must ensure that the metal is free of any impurities. Explain any two main challenges faced by the jute industry in India. Sea water contains many salts; such as sodium chloride, magnesium chloride, etc. The process of removing oxygen from a metallic oxide so as to convert it (metallic oxide) into a metal is known as reduction or smelting. Reduction by Electrolysis Reduction of highly electropositive (reactive) metals like K, Na, Ca, Mg, Al oxides/halides. Occurrence and Extraction of Metals. A Frenchman by the name of Paul L.T. Source of metal: Metals occur in earthâs crust and in sea water; in the form of ores. I. Life Process in One-Shot | CBSE Class 10 Science (Biology) Chapter 6 | Vedantu Class 9 and 10. â India has world class production in spinning, but weaving supplies low quality of fabric as it cannot use much of the high quality yarn produced in the country. In metallurgy refining of metals is the final process. â India exports yarn to Japan. Earthâs crust is the major source of metal. Suddenly, the metal was no longer rare. Uncategorized questions based on metallurgy class 10. Refining of Metals. Part 2 Life Process Notes Go Back to Class 10 Science Notes. Smelting is carried out in a blast furnace. Explain smelting process. 9. The charge, which is calcined ore â¦ Posted on November 30, 2020 by November 30, 2020 by Solution 1 Show Solution After implantation, a disc-like special tissue called placenta develops between the uterus wall and the embryo. Previous Post Next Post Latest Updates. No products in the cart. ... Aluminium Smelting is the process of extracting aluminium from its oxide, alumina, generally by the Hall-Héroult process. The idea of producing aluminum via electrolytic reduction in cryolite wasn't rare, either. Explain any three objectives of National Jute Policy. Smelting: Smelting is the process of reducing an oxide with carbon in the presence of flux at a high temperature. Explain male reproductive system of rabbit with a labeled diagram. Heroult came up with the same idea just a few months later. A blast of hot air is blown into the furnace through water-cooled nozzles. â The country also export cotton goods to U.S.A., U.K., Russia, France, East European countries, Nepal, Singapore, Sri Lanka, and African countries. Explain the rules for obtaining images formed by a convex lens with the help of ray diagram. The aluminum smelting process developed by Hall resulted in large amounts of pure aluminum.