What is a coarse-grained, dark-coloured, intrusive igneous rock that is widely…

PYQ SSC JE (Junior Engineer) 2022

What is a coarse-grained, dark-coloured, intrusive igneous rock that is widely used as a concrete aggregate, road base material, and crushed stone for railroad ballast?

  1. A.

    Quartzite

  2. B.

    Conglomerate

  3. C.

    Gabbro

  4. D.

    Sandstone

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