Which of the following has an organic origin?

সাধারণ বিজ্ঞান Basic Information of Daily Science, Inventions and... 07 Oct, 2020

প্রশ্ন Which of the following has an organic origin?

  • ক.
    sand
  • খ.
    bakelite
  • গ.
    coal
  • ঘ.
    nylon

সঠিক উত্তর

coal

মন্তব্য

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