MCQ
The two structures $I$ and $II$ represents


- AConformational isomers
- BStereoisomers
- ✓Structural isomers
- DIdentical

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${H_2}O(g) + C(s) \to CO(g) + {H_2}(g);\,\Delta H = 131\,kJ$$CO(g) + \frac{1}{2}{O_2}(g) \to C{O_2}(g);\Delta H = - 282\,kJ$
${H_2}(g) + \frac{1}{2}{O_2}(g) \to {H_2}O(g);\,\Delta H = - 242\,kJ$
$C(s) + {O_2}(g) \to C{O_2}(g);\,\Delta H = X\,kJ$ The value of $X$ is ......$kJ$

$(K_f$ for water $= 1.86\, K \,kg\, mol^{-1},$ and molar mass of ethylene glycol $= 62\, g\, mol^{-1})$