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(a) Name the chemical compound which is electrolysed in molten state to obtain aluminium metal. Which gas is evolved during this process ? (b) Name the chemical compound which is electrolysed in molten state to obtain sodium metal. Which gas is produced in this process ? (c) Name the gas produced when calamine ore is calcined. (d) Name the gas evolved when cinnabar ore is roasted. Lakhmir Singh Chemistry Class 10 |
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