Chemistry In upper layer of atmosphere ozone is formed by The action of ultraviolet rays on oxygen Subjecting oxygen to high pressure The combination of oxygen molecules The action of nitrogen on oxygen in atmosphere The action of ultraviolet rays on oxygen Subjecting oxygen to high pressure The combination of oxygen molecules The action of nitrogen on oxygen in atmosphere ANSWER DOWNLOAD EXAMIANS APP
Chemistry Aluminium can be purified by Oxidation Distillation Ozonolysis Electrolysis Oxidation Distillation Ozonolysis Electrolysis ANSWER DOWNLOAD EXAMIANS APP
Chemistry Stalactites and Stalagmites form due to the precipitation of : CaCO3 MgCl2 MgCO3 CaCl2 CaCO3 MgCl2 MgCO3 CaCl2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following type of coal has the lowest proportion of volatile matter ? Anthracite Bituminous Peat Lignite Anthracite Bituminous Peat Lignite ANSWER DOWNLOAD EXAMIANS APP
Chemistry Iron is extracted from Dolomite Haematite Cinnabar Bauxite Dolomite Haematite Cinnabar Bauxite ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used to iodise common salt ? Potassium iodide Potassium iodate Iodine Sodium iodide Potassium iodide Potassium iodate Iodine Sodium iodide ANSWER DOWNLOAD EXAMIANS APP
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