Verified Solution • 2025–26 Session moderate

QJEEM23Chb443: JEE Main 2023 Chemistry - Class 12 JEEM23Chb443 Solution: Match the List-I with List-II : .tg…

Match the List-I with List-II :

List-I
Cations		 List-II
Group reagents
A. Pb2+,Cu2+\mathrm{Pb^{2+},Cu^{2+}} i) H2S\mathrm{H_2S} gas in presence of dilute HCl
B. Al3+,Fe3+\mathrm{Al^{3+},Fe^{3+}} ii) (NH4)2CO3\mathrm{(NH_4)_2CO_3} in presence of NH4OH\mathrm{NH_4OH}
C. Co2+,Ni2+\mathrm{Co^{2+},Ni^{2+}} iii) NH4OH\mathrm{NH_4OH} in presence of NH4Cl\mathrm{NH_4Cl}
D. Ba2+,Ca2+\mathrm{Ba^{2+},Ca^{2+}} iv) H2S in presence of NH4OH

Correct match is -

Multiple Choice Options

  • A A →\to i, B →\to iii, C →\to iv, D →\to ii
  • B A →\to i, B →\to iii, C →\to ii, D →\to iv
  • C A →\to iii, B →\to i, C →\to iv, D →\to ii
  • D A →\to iv, B →\to ii, C →\to iii, D →\to i

Step-by-Step Verified Solution

Cations Group No. Group reagent
Pb+2,Cu+2\mathrm{Pb}^{+2}, \mathrm{Cu}^{+2} II H2S(g) in presence of  dil HCl \mathrm{H}_2 \mathrm{S}(\mathrm{g}) \text { in presence of } \text { dil HCl }
Al+3,Fe+3\mathrm{Al}^{+3}, \mathrm{Fe}^{+3} III nbsp;nbsp;amp;nbsp;nbsp;NH4OH in presence of amp;nbsp;nbsp;NH4Cl\begin{aligned}  &  \mathrm{NH}_4 \mathrm{OH} \text { in presence of } \\ &  \mathrm{NH}_4 \mathrm{Cl}\end{aligned}
CO+2,Ni+2\mathrm{CO}^{+2}, \mathrm{Ni}^{+2} IV\mathrm{IV} nbsp;nbsp;amp;nbsp;nbsp;H2 S in presence of amp;nbsp;nbsp;NH4OH\begin{aligned}  &  \mathrm{H}_2 \mathrm{~S} \text { in presence of } \\ &  \mathrm{NH}_4 \mathrm{OH}\end{aligned}
Ba+2,Ca+2\mathrm{Ba}^{+2}, \mathrm{Ca}^{+2}  V\mathrm{~V} nbsp;nbsp;amp;nbsp;nbsp;(NH4)2CO3 in presence amp;nbsp;nbsp; of NH4OH\begin{aligned}  &  \left(\mathrm{NH}_4\right)_2 \mathrm{CO}_3 \text { in presence } \\ &  \text { of } \mathrm{NH}_4 \mathrm{OH}\end{aligned}

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