Question

vessels and many other materials are made up of stainless steel and not of pure iron give scientific reason

Answer 1

Most of rhe vessels are made up of steel because,stainless steel remains stainless, or does not rust, because of the interaction between its alloying elements and the environment. Stainless steel contains iron, chromium, manganese, silicon, carbon and, in many cases, significant amounts of nickel and molybdenum. These elements react with oxygen from water and air to form a very thin, stable film that consists of such corrosion products as metal oxides and hydroxides. Chromium plays a dominant role in reacting with oxygen to form this corrosion product film. In fact, all stainless steels by definition contain at least 10 percent chromium

Answer 2

Hi friend !!

We know that when iron is exposed to moisture (H2O) it forms rust (hydrated ferric oxide ). This leads to rusting or corrosion of the metal surface.

Vessels and many other materials are made of stainless steel which is an alloy of carbon, chromium,nickel,molybdenum and iron with varying percentages. Addition of Chromium and molybdenum increases the corrosion resistance of the metal against various acids etc.
This is why we prefer using stainless steel and not iron in making vessels etc....!!

Hope that clears your doubts !!