General Science- Bhari Jal Kiska Oxide Hai ?

Q.10925: भारी जल किसका ऑक्साइड है ?
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भारी जल किसका ऑक्साइड है ? - What is the heavy water oxide? - Bhari Jal Kiska Oxide Hai ? General Science in hindi,   deutirium Ka question answers in hindi pdf  Para Ka questions in hindi, Know About Germanium Ka General Science online test General Science notes in hindi quiz book    Uranium Ka