GS PrelimsGeography (Physical)Structure and Interior of the Earth2009

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

Aluminium

Chromium

Iron

Silicon

Correct Answer: Option C

Explanation

1. The structure of planet Earth consists of several layers: crust, mantle, outer core, and inner core. 2. Below the mantle lies the Earth's core. 3. The core is mainly made up of metallic elements. 4. Seismic data and meteorite composition analysis indicate that the core is predominantly composed of Iron (about 85-90%) and Nickel, with smaller amounts of other elements. 5. Aluminium and Silicon are major components of the crust and mantle. Chromium is less abundant.

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