Which one of the following pairs of substances on reaction will not...

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Which one of the following pairs of substances on reaction will not evolve \( \mathrm{H}_{2} \) gas?
(a) Iron and \( \mathrm{H}_{2} \mathrm{SO}_{4} \) (aqueous)
(b) Iron and steam
(c) Copper and \( \mathrm{HCl} \) (aqueous)
(d) Sodium and ethyl alcohol
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