Home UPPSC Prelims 2025 Mock Test Series MCQs

Question

Which layer of the Earth is primarily responsible for the generation of the Earth's magnetic field?

  1. Crust
  2. Mantle
  3. Outer Core
  4. Inner Core

Answer:

Option C: Outer Core

Detailed Solution:

The correct answer is “Outer Core”.

The Earth's magnetic field is generated by the movement of molten iron in the Outer Core, a process known as the geodynamo.