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Q: Which of the following rock is an Igneous rock?
  • A. Limestone
  • B. Marble
  • C. Rhyolite
  • D. Gneiss
Correct Answer: Option C - Igneous rock–A type of rock that forms from the cooling of molten rock at or below earth's surface. Exp. Granite, Basalt, trap, Rhyolite etc. Sedimentary rock–A type of rock that is formed when particle from other rocks or the remains of plants and animal are pressed and cemented together. Exp. Sandstone, limestone, gypsum, shale etc. Metamorphic rock–A type of rock that forms from on existing rock that is changed by heat, pressure or chemical reaction. Exp.: Quartzite, Gneiss, slate, marble etc.
C. Igneous rock–A type of rock that forms from the cooling of molten rock at or below earth's surface. Exp. Granite, Basalt, trap, Rhyolite etc. Sedimentary rock–A type of rock that is formed when particle from other rocks or the remains of plants and animal are pressed and cemented together. Exp. Sandstone, limestone, gypsum, shale etc. Metamorphic rock–A type of rock that forms from on existing rock that is changed by heat, pressure or chemical reaction. Exp.: Quartzite, Gneiss, slate, marble etc.

Explanations:

Igneous rock–A type of rock that forms from the cooling of molten rock at or below earth's surface. Exp. Granite, Basalt, trap, Rhyolite etc. Sedimentary rock–A type of rock that is formed when particle from other rocks or the remains of plants and animal are pressed and cemented together. Exp. Sandstone, limestone, gypsum, shale etc. Metamorphic rock–A type of rock that forms from on existing rock that is changed by heat, pressure or chemical reaction. Exp.: Quartzite, Gneiss, slate, marble etc.