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Question

The innermost layer of earth is composed of


  1. Nickel

  2. Iron

  3. Both (A) and (B)

  4. Aluminium


Solution

The correct option is C

Both (A) and (B)


At the center of the Earth is the core, which has two parts. The solid, inner core of iron has a radius of about 760 miles (about 1,220 km). It is surrounded by a liquid, outer core composed of a nickel-iron alloy

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