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


  • Options
  • A. Aluminium
  • B. Chrromium
  • C. Iron
  • D. Silicon

  • Correct Answer
  • Iron 


  • World Geography problems


    Search Results


    • 1. Which is the second most abundant metal in the earth's crust

    • Options
    • A. Iron
    • B. Aluminum
    • C. Copper
    • D. Zinc
    • Discuss
    • 2. Which one of the following is present in the largest amount in terms of percent by mass in the earth's crust

    • Options
    • A. Silicon
    • B. Oxygen
    • C. Carbon
    • D. Calcium
    • Discuss
    • 3. ________ is separated from India by a narrow channel of sea formed by Palk Strait and the Gulf of Mannar.

    • Options
    • A. Sri Lanka
    • B. Myanmar
    • C. Bangladesh
    • D. Pakistan
    • Discuss
    • 4. Which of the following countries border does not touch China?

    • Options
    • A. Cambodia
    • B. Laos
    • C. Vietnam
    • D. Myanmar
    • Discuss
    • 5. Which of the following countries border touches with China?

    • Options
    • A. Uzbekistan
    • B. Thailand
    • C. Vietnam
    • D. South Korea
    • Discuss
    • 6. what is the International Date Line

    • Options
    • A. It is the Equator
    • B. it is the 00 longitude
    • C. It is the 900 east longitude
    • D. It is the 1800 longitude
    • Discuss
    • 7. During Pleistocene epoch, four glacial phases were identified. Which one of the following is the correct chronological order in which they appeared during this epoch from early times?

    • Options
    • A. Gunz - Mindel - Wurm - Riss
    • B. Gunz - Mindel - Riss - Wurm
    • C. Wurm - Riss - Mindel - Gunz
    • D. Mindel - Gunz - Riss - Wurm
    • Discuss
    • 8. What is seismic zone extending at an angle of about 45o from the base of an ocean trench, down through lithosphere to the asthenosphere known as?

    • Options
    • A. Appleton layer
    • B. Benioff zone
    • C. Conard discontinuity
    • D. Convergence zone
    • Discuss
    • 9. Why do Fold mountains have enormous thickness of sedimentary rocks?

    • Options
    • A. Due to deposition of sediments in a valley for milions of years
    • B. Due to accumulation of sediments in a geosyncline
    • C. The plains were folded into mountains
    • D. The sediments were folded into recumbent and nappe
    • Discuss
    • 10. The deepest oceanic trench Mariana is located in ______

    • Options
    • A. Atlantic Ocean
    • B. Arctic Ocean
    • C. Pacific Ocean
    • D. Indian Ocean
    • Discuss


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