Why are coils of electric toasters and electric irons are made of an-alloy rather than a pure metal ?ORWhy are alloys commonly used in electric heating devices? Given reason. [

The coils of electric toasters, electric irons and other heating devices are made of an alloy rather than a pure metal because (i) the resistivity of an alloy is much higher than that of a pure metal, and (ii) an alloy does not undergo oxidation (or burn) easily even at high temperature, when it is red hot.