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  5. Rocks and Soil / चट्टानें और मिट्टी

2nd Class EVS Rocks and Soil / चट्टानें और मिट्टी Question Bank Rock and Minerals

  • question_answer
    Which of the following is the hardest substance?

    A)  Granite

    B)  Coal

    C)                                           Diamond                      

    D)  Chalk                                   

    Correct Answer: C

    Solution :

    Diamond is the hardest substance.


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