Which one among the following statements is not correct?

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Which one among the following statements is not correct?

The plane of separation between the crust and mantle is known as Mohorovicic discontinuity
The mantle contains more than two-third of the total material mass of the Earth
The mantle is composed of the heaviest materials of the Earth
The inner core of the Earth is in solid state
This question was previously asked in
UPSC CAPF – 2012
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Statement C is incorrect. The mantle is not composed of the heaviest materials of the Earth. The inner and outer core are composed of the heaviest materials, primarily iron and nickel. The density increases from the crust through the mantle to the core.
Understanding the composition and characteristics of Earth’s interior layers (crust, mantle, core) is crucial for answering questions about geophysics.
Statement A is correct: The Mohorovicic discontinuity (Moho) is the boundary between the Earth’s crust and the mantle. Statement B is correct: The mantle constitutes about 84% of Earth’s volume and around 67% of its mass. Statement D is correct: Due to immense pressure, the inner core is in a solid state despite extremely high temperatures.

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