Question

Which property of iron is modified in stainless steel

Answer 1

Explanation:

Stainless steel is an alloy of iron (Fe) and chromium (Cr). Chromium forms a film of its oxide, called the passive layer on the surface of metal thus preventing the oxidation of iron present in the alloy. This chromium oxide layer is present tightly stuck to the surface of the metal and is highly corrosion resistant. So, the presence of chromium provides resistance against corrosion of iron. Other metals like Ni, Mo, Cu and Al are also present in stainless steel. They provide additional features like toughness and formability.

Answer 2

Stainless steel is a mix of iron (Fe) and chromium (Cr).

Explanation:

• Chromium forms a layer of its oxide, which is known as the passive layer on the surface of metal. This prevents the oxidation of iron present in the alloy.
• This chromium oxide layer is tightly stuck to the surface of the metal. This is highly corrosion resistant. Hence, the presence of chromium provides resistance against rusting of iron.
• Different metals like Ni, Mo, Cu and Al are also involved in producing stainless steel.

To learn more:

1. Stainless steel pans are usually provided with copper bottoms. The reason for this could be that(a) copper bottom makes the pan more durable.(b) such pans appear colourful.(c) copper is a better conductor of heat than the stainless steel.(d) copper is easier to clean than the stainless steel.:

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2. Utensils made of stainless steel do not rust​:

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