ISRO Mechanical & Aerospace 2016 - Question 53

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Topic: Material Science

Which of the following order of crystal structure will match with metals Iron - Copper - Zinc in that order?

  • A. BCC-HCP-FCC
  • B. FCC-BCC-HCP
  • C. HCP-FCC-BCC
  • D. BCC-FCC-HCP

Answer: D. BCC-FCC-HCP

Explanation: Iron (Fe) has a Body-Centered Cubic (BCC) structure at room temperature. Copper (Cu) has a Face-Centered Cubic (FCC) structure, known for its ductility. Zinc (Zn) possesses a Hexagonal Close-Packed (HCP) structure. Therefore, the order is BCC - FCC - HCP.

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