Organic Reactions & Conversions · JEE Main previous year questions

Identify X, Y and Z in the following reaction. (Equation not balanced) ${\mathrm{ClO}}^{\bullet }+{\mathrm{NO}}_2\to \underline{\mathrm{X}}\stackrel{{\mathrm{H}}_2\mathrm{O}}{\to }\underline{\mathrm{Y}}+\underline{\mathrm{Z}}$

1. A.$\mathrm{X}={\mathrm{ClONO}}_2,\mathrm{Y}=\mathrm{HOCl},\mathrm{Z}={\mathrm{NO}}_2$
2. B.$\mathrm{X}={\mathrm{ClNO}}_3,\mathrm{Y}={\mathrm{Cl}}_2,\mathrm{Z}={\mathrm{NO}}_2$
3. C.$\mathrm{X}={\mathrm{ClONO}}_2,\mathrm{Y}=\mathrm{HOCl},\mathrm{Z}={\mathrm{HNO}}_3$
4. D.$\mathrm{X}={\mathrm{ClNO}}_2,\mathrm{Y}=\mathrm{HCl},\mathrm{Z}={\mathrm{HNO}}_3$

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1. A.$(\mathrm{i})\mathrm{C}{\mathrm{r}}_2{\mathrm{O}}_3,770\mathrm{K},20\mathrm{atm};(\mathrm{ii})\mathrm{Cr}{\mathrm{O}}_2\mathrm{C}{\mathrm{l}}_2,{\mathrm{H}}_3{\mathrm{O}}^{+};(\mathrm{iii})\mathrm{NaOH};(\mathrm{iv}){\mathrm{H}}_3{\mathrm{O}}^{+}$
2. B.$(\mathrm{i})\mathrm{Cr}{\mathrm{O}}_2\mathrm{C}{\mathrm{l}}_2,{\mathrm{H}}_3{\mathrm{O}}^{+};(\mathrm{ii})\mathrm{C}{\mathrm{r}}_2{\mathrm{O}}_3,770\mathrm{K},20\mathrm{atm};(\mathrm{iii})\mathrm{NaOH};(\mathrm{iv}){\mathrm{H}}_3{\mathrm{O}}^{+}$
3. C.$(\mathrm{i})\mathrm{KMn}{\mathrm{O}}_4,\mathrm{O}{\mathrm{H}}^{-};(\mathrm{ii})\mathrm{M}{\mathrm{o}}_2{\mathrm{O}}_3,\Delta ;(\mathrm{iii})\mathrm{NaOH};(\mathrm{iv}){\mathrm{H}}_3{\mathrm{O}}^{+}$
4. D.$(\mathrm{i})\mathrm{M}{\mathrm{o}}_2{\mathrm{O}}_3,\Delta ;(\mathrm{ii})\mathrm{Cr}{\mathrm{O}}_2\mathrm{C}{\mathrm{l}}_2,{\mathrm{H}}_3{\mathrm{O}}^{+};(\mathrm{iii})\mathrm{NaOH};(\mathrm{iv}){\mathrm{H}}_3{\mathrm{O}}^{+}$

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1. A.'A' and 'B' are both Markovnikov addition products.
2. B.'A' is Markovnikov product and 'B' is anti-Markovnikov product.
3. C.'A' and 'B' are both anti-Markovnikov products.
4. D.'B' is Markovnikov and 'A' is anti-Markovnikov product.

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$K_{a_1}$, $K_{a_2}$ and $K_{a_3}$ are the respective ionization constants for the following reactions (a), (b) and (c). (a) $H_2{C}_2{O}_4\rightleftharpoons H^{+}+H{C}_2{O}_4^{-}$ (b) $H{C}_2{O}_4^{-}\rightleftharpoons H^{+}+C_2{O}_4^{2-}$ (c) $H_2{C}_2{O}_4\rightleftharpoons 2H^{+}+C_2{O}_4^{2-}$ The relationship between $K_{a_1}$, $K_{a_2}$ and $K_{a_3}$ is given as :

1. A.$K_{a_3}=K_{a_1}+K_{a_2}$
2. B.$K_{a_3}=K_{a_1}-K_{a_2}$
3. C.$K_{a_3}=K_{a_1}/K_{a_2}$
4. D.$K_{a_3}=K_{a_1}\times K_{a_2}$