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#54460 Bangla Language & Literature General Level 0

পরমাণুর নিউক্লিয়াসে কী কী থাকে?

  1. A ইলেকট্রন ও পজিট্রন
  2. B ইলেকট্রন ও প্রোটন
  3. C নিউট্রন ও পজিট্রন
  4. D নিউট্রন ও প্রোটন
Answer: D - নিউট্রন ও প্রোটন

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