Question

Whyaretheinnersidesofvesselsmadeupofbrassandcoppercoated

Answer 1

because brass is an alloy. and they are highly resistant to corrosion. they don't get tarnish easily or get damaged when kept in open. and copper is a pure metal. they will get damaged and tarnished. that's why utensils are coated with copper so they will form a alloy and don't get tarnish or damaged when kept in open.