MCQ
$(CH_3)_3C—CHO$ does not undergo aldol condensation due to
- Athree electron donating methyl groups
- Bcleavage taking place between $—C— CHO$ bond
- ✓absence of alpha hydrogen atom in the molecule
- Dbulky $(CH_3)_3 C—$ group
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$\begin{array}{l} Cl -\left( CH _2\right)_4- Cl \xrightarrow{\text { excess } NH _3} A \xrightarrow{ NaOH } \\ B + H _2 O + NaCl\end{array}$
Considering the above chemical reaction, identify the product $"X"$
$Zn(s) + N{i^{2 + }}(a = 1.0)$ $\rightleftharpoons$ $Z{n^{2 + }}(a = 10) + Ni(s)$ occurs, is found to be $0.5105\,V$ at $298\,K$. The standard e.m.f. of the cell is ............ $\mathrm{V}$