A certain metal fails to liberate ${{\rm{H}}_2}$ gas from a moderately conc. HCl solution. However, it displaces ${\rm{Ag}}$ from ${\rm{AgN}}{{\rm{O}}_3}$ solution. Which among the followings may it be?

NEET UG CHEMISTRY MCQ: ELECTRO CHEMISTRY

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A certain metal fails to liberate

{\mathrm{H}_2}

gas from a moderately conc. HCl solution. However, it displaces

\mathrm{Ag}

from

\mathrm{AgN}{\mathrm{O}_3}

solution. Which among the followings may it be?

View answer and explanation

Correct option: C

\mathrm{Cu}

Option C (Cu) is correct because Cu is less reactive than H and cannot liberate H2 from HCl, but it is more reactive than Ag and can displace it from AgNO3 solution.

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