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hello everyone how are you all welcome to chemistry art myself by kumar patel and yes i am here with a new two questions so without wasting time letamp;#39;s start so the question is magnesium ribbon is rubbed with before making it to burn the reaction of rubbing the ribbon is too why we are rubbing it so first of all you should know that whenever metal is open in air if they are reactive highly reactive or slight medium or more reactive then they are forming oxide on it okay so here we have to find out the reason why we are burning oh sorry why we are rubbing the magnesium before burning so removal of moisture condensed over the surface of ribbon no this is not a proper reason then generate heat due to the exothermic reaction no no no no d is mix silicon from sandpaper means silicon dioxide with magnesium for lowering the ignition temperature of the ribbon no when we are rubbing the temperature will increase only so what will be the reason the main reason is your answer is option c w