Question

An alloy of Iron, Nickel and Chromium is
1. Lead
2. Brass
3. Stainless Steel
4. Bronze

Answer 1

Correct Answer - Option 3 : Stainless Steel

The correct answer is Stainless Steel.

• Stainless Steel is an alloy of Iron, Nickel, and Chromium.

• Alloy is a substance formed from the combination of two or more metals. 
• Alloys can also be formed from combinations of metals and other elements.
• The properties exhibited by alloys are often quite different from the properties of their individual components.
• Alloys tend to have greater strength and hardness when compared to pure metals.
• Alloys can also be called solid solutions of metallic elements.
• Steel is primarily an alloy of iron and carbon.
• However, different types of steel are known to contain varying amounts of carbon, along with other elements (such as chromium, manganese, sulfur, phosphorus, nickel, copper, and molybdenum).
• The composition of stainless steel is:
  • Approximately 85-88% iron (Fe)
  • At least 10.5% chromium (Cr)
  • Less than 1.2% carbon (C)
• Bronze is an alloy of copper (75%) and tin ( up to 12%).
• Brass is a metal alloy primarily composed of copper and zinc. 
• However, other metals—such as iron, aluminum, silicon, and manganese—are also mixed in to produce different properties and color variations.
• Lead on the other hand is a chemical element.
  • Symbol- Pb
  • Atomic no.- 82