আবিষ্কার ও আবিষ্কারক II Inventions and Inventors GK MCQ

আবিষ্কার ও আবিষ্কারক II Inventions and Inventors GK MCQ
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[@user-MountEverest47]

Darun class dada... Congratulations🎉🎉🎉🎉🎉🎉🥳

[@user-MountEverest47]

Class continues kor ben

[@Swati_Wbp123]

Thank you dada ❤❤

[@sonulifestyle1929]

Proton - ratherford (1919)

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1886 - ই গোল্ডস্টেইন প্রথম খোঁজ করে but নাম রাখে রাদারফোর্ড