MCQ
${H_2}O$ is a liquid while ${H_2}S$ is gas due to
- ACovalent bonding
- BMolecular attraction
- ✓$H -$ bonding
- D$H -$ bonding and molecular attraction
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$Zn(s) + N{i^{2 + }}(a = 1.0)$ $\rightleftharpoons$ $Z{n^{2 + }}(a = 10) + Ni(s)$ occurs, is found to be $0.5105\,V$ at $298\,K$. The standard e.m.f. of the cell is ............ $\mathrm{V}$
