Question

3) An alloy among the following is-
(a) Copper
(b) Iron
(c) nickel
(d) steel​

Answer 1

Answer:steel

Explanation: All the others are metals. Steel is formed by mixing other elements such as chromium , aluminum, silicon, and etc.

Answer 2

Iron is an alloy among the following. (Option b is the correct answer)

• An Alloy is a metallic material made up of two or more elements, can be a compound or a solution. While carbon, a nonmetal, is a necessary component of steel, the components of alloys are typically metals themselves.
• Steel is an alloy made of a metal and a non-­metal. The components of steel are iron (metal) and carbon (non­-metal).
• Alloy steel is created by adding additional components made up of metals and non-metals to carbon steel. With respect to the elements used to alloy, these alloy steels exhibit a variety of environmental, chemical, and physical characteristics. Here, varying mechanical characteristics can be provided by the ratio of alloying components.
• There are numerous ways that alloying substances might change carbon steel. Microstructures, heat treatment conditions, and mechanical characteristics can all be impacted by alloying. High-speed computers can predict the characteristics and microstructures of steel when it is cold-formed, heat-treated, hot-rolled, or alloyed.
• For instance, carbon steel alone will not be sufficient if qualities like high strength and weldability are needed in steel for specific applications since carbon's intrinsic brittleness will lead the weld to be brittle. The solution is to add nickel or manganese while lowering the carbon content. This is one method of producing high strength steel with necessary weldability.

Hence, Iron is an alloy among the following.

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