Every atom of Carbon di-oxide contains -- Oxygen and --- Carbon.

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প্রশ্নঃ Every atom of Carbon di-oxide contains -- Oxygen and --- Carbon.

  • ক. 1, 2
  • খ. 2, 1
  • গ. 1, 1
  • ঘ. 2, 2

সঠিক উত্তরঃ

2, 1
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