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  5. Rocks and Soil / चट्टानें और मिट्टी

5th Class Science Rocks and Soil / चट्टानें और मिट्टी Question Bank Soil, Rocks and Minerals

  • question_answer
    Which igneous rock is used by dentists for polishing of teeth?

    A) Granite                         

    B) Pumice    

    C) Obsidian           

    D)        Sandstone

    E) None of these

    Correct Answer: B

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