SSC Geography Sample Paper NCERT Sample Paper-7

  • question_answer
    Consider the following statements with respect to volcanoes
    1. The molten rock materials are called magma inside the earth, and lava when they reach the surface of the earth.
    2. Basic lava cone is formed by basaltic lava having low silica content.
    3. Nested cone is the result of subsequent explosion inside a big cone. Which of the above statements is/are correct?

    A)  1 only 

    B)  1 and 2 only

    C)  1, 2 and 3        

    D)         2 and 3 only

    Correct Answer: C

    Solution :

    [c] Magma is a mixture of molten or semi-molten rock, volatiles and solids that is found beneath the surface of the Earth, and is expected to exist on other terrestrial planets. A lava cone is a type of volcano composed primarily of viscous lava flows.

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