Q. The oceanic layer is the extension of C-layer of the continental crust and A and B-layer are mostly absent.

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Q. The least dense layer among the layers under the continental crust is ____________

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Q. The area not considered under the crust is ____________

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Q. The depth up to which the mantle is said to exist is ________

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Q. The thickness of the 2 layers of the upper mantle is approximately said to be ________

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Q. The exact nature of the mantle is completely understood.

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Q. Which of the following is not true about Asthenosphere?

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Q. Who was the first person to tell about the Core?

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Q. The depth at which the core layer starts and ends respectively is ____________

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Q. Which of the following is true about the inner core?

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Q. The density of the Earth in the core immediately after the mantle is _______

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Q. The layer which does not transmit the S-waves is _______

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Q. There is a hypothesis that the inner core is made up chiefly of iron and nickel.

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Q. The density of the Earth at its centre is said to be ________

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Q. The layer which is said to support the slow moving tectonic plates is ________

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Q. What is the thickness of the inner core?

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Q. The layer which is believed to be the source of volcanic activity is ________

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Q. Which of the following about weathering is not true?

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Q. The process that is not considered under mechanical weathering is _______

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Q. What is the change in volume when water freezes?

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