प्रमोद अपनी बहन को किस महीने मे विदा करना चाहता था
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Solution: Among Mg and MgO ,only Mg gives Hydrogen gas with acid . 1 mole i.e 24gm of "Mg' gives 22.4 lit of H2 at STP. ... of Mg=2.4gm and wt of MgO in the mixture= 10-2.4= 7.6gm.
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