General Science- Ek Vidyut Bulb Me Gas Hoti Hai ?

Q.10076: एक विद्युत बल्ब में गैस होती है ?
A.
B.
C.
D.
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एक विद्युत बल्ब में गैस होती है ? - Which gas does an electric bulb contains? General Science in hindi,   Oxygen question answers in hindi pdf  Nitrogen questions in hindi, Know About Vayu General Science online test General Science notes in hindi quiz book    Koi Nahin