General Science- ( D₂O ) Kis Vaigyanik Dwara Diya Gaya Sutra Hai ?

Q.10831: ( D₂O ) किस वैज्ञानिक द्वारा दिया गया सूत्र है ?
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( D₂O ) किस वैज्ञानिक द्वारा दिया गया सूत्र है ? - (D₂O) is the formula given by which scientist? - ( D₂O ) Kis Vaigyanik Dwara Diya Gaya Sutra Hai ? General Science in hindi,   Kirchof Dwara question answers in hindi pdf  Pascal Dwara questions in hindi, Know About Einstein Dwara General Science online test General Science notes in hindi quiz book    Newton Dwara