Question

alloy are used in electrical heating devices rather than pure metal. give reason

Answer 1

Hello there...

 Alloys are used rather than pure metals in electrical heating devices since they have low electrical conductivity and also a low melting point. Usually the alloys don't have a single melting point; they have a range of melting points. The temperature at which melting begins is called the SOLIDUS and the temperature at which melting  completes is called the LIQUIDUS.

Thanks

Answer 2

it is so because alloys are mixture of many metals and it allows only the energy that is required .Pure metal is a very good conductor of heat and electricity and also very costly.But these are of very good quality only with less price.