Conc. \( \mathrm{H}_{2} \mathrm{SO}_{4} \) will not give any gas with: (a) \( \mathrm{ZnSO}_{4} ...

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Conc. \( \mathrm{H}_{2} \mathrm{SO}_{4} \) will not give any gas with:
(a) \( \mathrm{ZnSO}_{4} \)
(b) Barium phosphate
(c) Sodium nitrate
(d) Sodium oxalate
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