Which of the following is the hardest rock?

24 Apr, 2023

প্রশ্ন Which of the following is the hardest rock?

  • ক.
    Granite
  • খ.
    Coal
  • গ.
    Chalk
  • ঘ.
    Diamond

সঠিক উত্তর

Diamond

মন্তব্য

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