MCQ
The oxidation number of chlorine is maximum in $.........$
- A$\ce{HOCl}$
- B$ \mathrm{Cl}_2 \mathrm{O}_6 $
- ✓$ \mathrm{KClO}_4 $
- D$\mathrm{NaClO}_3 $
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
${H_2}O\left( g \right) + C\left( s \right) \to CO\left( g \right) + {H_2}\left( g \right);\Delta H = 131\,kJ$
$CO\left( g \right) + \frac{1}{2}{O_2}\left( s \right) \to C{O_2}\left( g \right);\Delta H = - 282\,kJ$
${H_2}\left( g \right) + \frac{1}{2}{O_2}\left( s \right) \to {H_2}O\left( g \right);\Delta H = - 242\,kJ$
$C(s) + O_2(g) \to CO_2(g); \Delta H = X\,kJ$
The value of $X$ will be......$kJ$

(Nearest integer)
(Use : $\Delta_{\mathrm{c}} \mathrm{H}($ glucose $)=-2700\, \mathrm{~kJ}\, \mathrm{~mol}^{-1}$ )
$\Delta {H_{{\rm{System}}}} = 2000\ kJ/mol$
$T = 400\ K$
Find out value of $\Delta {S_{{\rm{System}}}}$..........$ kJ/mol-K$