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Q: The examples of different rocks classified on the basis of geological formation as igneous, Sedimentary and Metamorphic rocks are given as options. Identify the INCORRECT combination.
  • A. Igneous : Syenite
  • B. Metamorphic : Gneiss
  • C. Sedimentary : Marble
  • D. Sedimentary : Lime stone
Correct Answer: Option C - Igneous rock– Granite, syenite, diorite, gabbro, hypabysssal, dolerite, basalt. Sedimentary rock– Sand stone, lime stone, shale, chalk, diatomite, gypsum dolemite, lime tufas, anhydrite magnesite, carbonate conglomerate, breccia. Metamorphic rock– Gneiss, quartzite, marble, schist slate, phyallite.
C. Igneous rock– Granite, syenite, diorite, gabbro, hypabysssal, dolerite, basalt. Sedimentary rock– Sand stone, lime stone, shale, chalk, diatomite, gypsum dolemite, lime tufas, anhydrite magnesite, carbonate conglomerate, breccia. Metamorphic rock– Gneiss, quartzite, marble, schist slate, phyallite.

Explanations:

Igneous rock– Granite, syenite, diorite, gabbro, hypabysssal, dolerite, basalt. Sedimentary rock– Sand stone, lime stone, shale, chalk, diatomite, gypsum dolemite, lime tufas, anhydrite magnesite, carbonate conglomerate, breccia. Metamorphic rock– Gneiss, quartzite, marble, schist slate, phyallite.