UPSC Geography The Earth and the Solar System Question Bank The Solar System, The Earth and The Moon

  • question_answer
    Which one of the following statements is correct with reference to our solar system?

    A) ?The Earth is the densest of all the planets in our solar system

    B) ?The predominant element in the composition of the Earth is silicon.

    C) ?The Sun contains 75 percent of the mass of the solar system

    D) ?The diameter of the Sun is 190 times that of the Earth.

    Correct Answer: A

    Solution :

    With an average density of 5.52, the Earth is the densest of all the planets of our solar system. The predominant element of the Earth's composition is iron (35%) while that of the earth's crust is oxygen (46%). The Sun contains more than 99% of the mass of the solar systems. The diameter of the sun is about 109 times that of the Earth.


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