Share Facebook Email Telegram WhatsApp Results #1. An element of an inorganic compound found in nature and contains metal is known as _________. Mineral Mineral Ore Ore Both (a) and (b) Both (a) and (b) None of these None of these #2. A chemical process of extracting a metal from its ore is known as ________. Mineralogy Mineralogy Metallurgy Metallurgy Liquation Liquation None of the above None of the above #3. A mineral from which the metal is extracted economically is known as _________. Matrix Matrix Gangue Gangue Ore Ore None of these None of these #4. An unwanted earthly material associated with tin ore as impurity is known as __________. Gangue Gangue Flux Flux Froth Froth None of these None of these #5. The process used to convert impure alumina to pure alumina is __________. Roasting Roasting Electrolytic refining Electrolytic refining Purification Purification Baeyer's process Baeyer's process #6. Aluminium powder is used in thermite welding because _______. It is a strong reducing agent It is a strong reducing agent It is strong oxidising agent It is strong oxidising agent It is corrosion resistant It is corrosion resistant It is a good conductor of heat It is a good conductor of heat #7. Metals aluminium and copper present in the alloy ______. Solder Solder Brass Brass Bronze Bronze Duralumin Duralumin #8. In electrolytic refining of metals the impure metal is made _______. Cathode Cathode Salt bridge Salt bridge Anode Anode Electrode Electrode #9. The method used for refining of aluminium is ____________. Hall's Process Hall's Process Bayaer's Process Bayaer's Process Hoopes Process Hoopes Process All of the above All of the above #10. Biogas is produced by anaerobic fermentation of biological materials. The main constituent of biogas is ________. Propane Propane Ethene Ethene Butane Butane Methane Methane Finish
