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Hydrogen gas can not be prepared by :A. `Zn + "dil" H_(2) SO_(4)`B. `Zn + "dil" HCl`C. `Zn + "conc." HCl`D. `Zn + "conc." H_(2)SO_(4)` |
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Answer» Correct Answer - D `Zn + "conc." H_(2)SO_(4) rarr ZnSO_(2) + SO_(2) + H_(2)O` |
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