Match the List-I with List-II
List-I (Cations) List-II(Group reagents)
A) ${Pb}^{2 +}, {Cu}^{2 +}$ i) $H_{2} S$ gas in presence of dilute HCl
B) $A l^{3 +}, {Fe}^{3 +}$ ii) ${({NH}_{4})}_{2} {CO}_{3}$ in presence of ${NH}_{4} OH$
C) ${Co}^{2 +}, {Ni}^{2 +}$ iii) ${NH}_{4} OH$ in presence of ${NH}_{4} C l$
D) ${Ba}^{2 +}, {Ca}^{2 +}$ iv) $H_{2} S$ in presence of ${NH}_{4} OH$
Correct match is______

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$A \to i; B \to iii; C \to ii; D \to iv$

$A \to iii; B \to i; C \to iv; D \to ii$

$A \to i; B \to iii; C \to iv; D \to ii$

$A \to iv; B \to ii; C \to iii; D \to i$

answer is D.

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Detailed Solution

$A \to {Pb}^{2 +}, {Cu}^{2 +} \to (i) H_{2} S$ in presence of HCl
$B \to {Al}^{3 +}, {Fe}^{3 +} \to (iii) {NH}_{2} OH$ in presence of NH₄OH
$C \to {Co}^{2 +}, {Ni}^{2 +} \to (iv) H_{2} S$ in presence of NH₄OH
${D→Ba}^{2 +}, {Ca}^{2 +} \to (ii) {({NH}_{4})}_{2} {CO}_{3}$ in presence of NH₄OH

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