MCQ
In standardization of $N{a_2}{S_2}{O_3}$ using ${K_2}C{r_2}{O_7}$ by iodometry, the equivalent weight of ${K_2}C{r_2}{O_7}$ is
- A$MW/2$
- B$MW/3$
- ✓$MW/6$
- D$MW/1$

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$n = 3, l = 1, m_l = 0$
$\Delta_{\text {vap }} \mathrm{H}-\Delta_{\text {vap }} \mathrm{U}=...... \times 10^{2} \,\mathrm{~J}\, \mathrm{~mol}^{-1}$. (Round off to the NearestInteger)
$\left[\right.$ Use : $\left.R=8.31\, \mathrm{~J}\, \mathrm{~mol}^{-1}\, \mathrm{~K}^{-1}\right]$
[Assume volume of $\mathrm{H}_{2} \mathrm{O}(\mathrm{l})$ is much smaller than volume of $\mathrm{H}_{2} \mathrm{O}(\mathrm{g})$. Assume $\mathrm{H}_{2} \mathrm{O}(\mathrm{g})$ treated as an ideal gas]
| List $I$ Isomeric pairs | List $II$ Type of isomers |
| $A$ Propanamine and $N-$Methylethanamine | $I$ Metamers |
| $B$ Hexan$-2-$one and Hexan$-3-$one | $II$ Positional isomers |
| $C$ Ethanamide and Hydroxyethanimine | $III$ Functional isomers |
| $D$ $o-$nitrophenol and $p-$nitrophenol | $IV$ Tautomers |
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