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In the structure of planet Earth, below the mantle, the core is mainly made up of which one of the following?

  1. Aluminium
  2. Chromium
  3. Iron
  4. Silicon

Explanation

Option (c) is correct
  • Earth’s core is composed mainly of iron and nickel (NiFe).

Diagram illustrating Earth's internal structure with concentric colored layers representing crust, lithosphere, asthenosphere, lower mantle, outer core, and inner core. Labels include depth measurements, densities, temperatures, and key compositional details such as ultramafic silicates in mantle and iron, nickel, sulfur in core, highlighting structural boundaries like Moho and Gutenberg discontinuities.

Answer: (c) Iron
,

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