Organic Reactions & Conversions · JEE Advanced previous year questions

The correct match of the group reagents in $\text{List-I}$ for precipitating the metal ion given in $\text{List-II}$ from solutions, is $$\begin{array}{ll}\text{List-I}& \text{List-II}\\ \text{(P) Passing }{\mathrm{H}}_2\mathrm{S}\text{ in the presence of }\mathrm{N}{\mathrm{H}}_4\mathrm{OH}& \text{(1) }\mathrm{C}{\mathrm{u}}^{2+}\\ \text{(Q) }(\mathrm{N}{\mathrm{H}}_4{)}_2\mathrm{C}{\mathrm{O}}_3\text{ in the presence of }\mathrm{N}{\mathrm{H}}_4\mathrm{OH}& \text{(2) }\mathrm{A}{\mathrm{l}}^{3+}\\ \text{(R) }\mathrm{N}{\mathrm{H}}_4\mathrm{OH}\text{ in the presence of }\mathrm{N}{\mathrm{H}}_4\mathrm{Cl}& \text{(3) }\mathrm{M}{\mathrm{n}}^{2+}\\ \text{(S) Passing }{\mathrm{H}}_2\mathrm{S}\text{ in the presence of dilute HCl}& \text{(4) }\mathrm{B}{\mathrm{a}}^{2+}\\ & \text{(5) }\mathrm{M}{\mathrm{g}}^{2+}\end{array}$$

1. A.P → 3; Q → 4; R → 2; S → 1
2. B.P → 4; Q → 2; R → 3; S → 1
3. C.P → 3; Q → 4; R → 1; S → 5
4. D.P → 5; Q → 3; R → 2; S → 4

1. A.$\mathbf{P}$
2. B.$\mathbf{Q}$
3. C.$\mathbf{R}$
4. D.$\mathbf{S}$

1. A.(A)
2. B.(B)
3. C.(C)
4. D.(D)

1. A.Both $\mathbf{P}$ and $\mathbf{Q}$ have asymmetric carbon(s).
2. B.Both $\mathbf{Q}$ and $\mathbf{R}$ have asymmetric carbon(s).
3. C.Both $\mathbf{P}$ and $\mathbf{R}$ have asymmetric carbon(s).
4. D.$\mathbf{P}$ has asymmetric carbon(s), $\mathbf{S}$ does not have any asymmetric carbon.

1. A.$\mathbf{Q}:{\mathrm{C}}_6{\mathrm{H}}_5\mathrm{CH}(\mathrm{Cl})\mathrm{COOH}$, $\mathbf{R}:{\mathrm{C}}_6{\mathrm{H}}_5\mathrm{C}{\mathrm{H}}_2\mathrm{C}{\mathrm{H}}_2\mathrm{CON}{\mathrm{H}}_2$, $\mathbf{S}:4-(3-\mathrm{amino}-3-\mathrm{oxopropyl})\mathrm{benzenesulfonic}\mathrm{acid}$
2. B.$\mathbf{Q}:{\mathrm{C}}_6{\mathrm{H}}_5\mathrm{CH}(\mathrm{Cl})\mathrm{COOH}$, $\mathbf{R}:{\mathrm{C}}_6{\mathrm{H}}_5\mathrm{C}{\mathrm{H}}_2\mathrm{C}{\mathrm{H}}_2\mathrm{COOH}$, $\mathbf{S}:\text{1-indanone}$
3. C.$\mathbf{Q}:{\mathrm{C}}_6{\mathrm{H}}_5\mathrm{C}{\mathrm{H}}_2\mathrm{COCl}$, $\mathbf{R}:{\mathrm{C}}_6{\mathrm{H}}_5\mathrm{C}{\mathrm{H}}_2\mathrm{C}{\mathrm{H}}_2\mathrm{COOH}$, $\mathbf{S}:\text{1-indanone}$
4. D.$\mathbf{Q}:{\mathrm{C}}_6{\mathrm{H}}_5\mathrm{C}{\mathrm{H}}_2\mathrm{COCl}$, $\mathbf{R}:{\mathrm{C}}_6{\mathrm{H}}_5\mathrm{C}{\mathrm{H}}_2\mathrm{C}{\mathrm{H}}_2\mathrm{CON}{\mathrm{H}}_2$, $\mathbf{S}:4-(3-\mathrm{amino}-3-\mathrm{oxopropyl})\mathrm{benzenesulfonic}\mathrm{acid}$