MCQ
Which will not give purple colour with ninhydrin
- AAlanine
- BGlycine
- ✓Proline
- DGlutamic acid
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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 ............ $\mathrm{V}$
$\mathrm{MnO}_2+\mathrm{KOH}+\mathrm{O}_2 \rightarrow \mathrm{A}+\mathrm{H}_2 \mathrm{O} .$
Product ' $A$ ' in neutral or acidic medium disproportionate to give products ' $\mathrm{B}$ ' and ' $\mathrm{C}$ ' along with water. The sum of spin-only magnetic moment values of $B$ and $C$ is . . . . . .$BM$. (nearest integer)
(Given atomic number of $\mathrm{Mn}$ is $25$ )