(B) In qualitative analysis,the group-$II$ cations are precipitated as sulfides by passing $H_2S$ gas in the presence of dilute $HCl$.The group-$II$ c

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(B) In qualitative analysis,the group-$II$ cations are precipitated as sulfides by passing $H_2S$ gas in the presence of dilute $HCl$.The group-$II$ cations include $Cu^{2+}, Pb^{2+}, Hg^{2+}, Bi^{3+}, Cd^{2+}, As^{3+}, Sb^{3+},$ and $Sn^{4+}$.In option $(C)$,both $Cu^{2+}$ and $Pb^{2+}$ belong to group-$II$ and will precipitate as sulfides.In option $(D)$,both $Hg^{2+}$ and $Bi^{3+}$ belong to group-$II$ and will precipitate as sulfides.Therefore,both $(C)$ and $(D)$ are correct pairs.

Class 12 Chemistry Principles Related to Practical Chemistry Wet Test for Basic Radical

The pair$(s)$ of ions where $BOTH$ the ions are precipitated upon passing $H_2S$ gas in the presence of dilute $HCl$,is(are):
$(A) Ba^{2+}, Zn^{2+}$
$(B) Bi^{3+}, Fe^{3+}$
$(C) Cu^{2+}, Pb^{2+}$
$(D) Hg^{2+}, Bi^{3+}$

IIT 2015 All IIT

A
$(A, D)$
B
$(C, D)$
C
$(B, D)$
D
$(B, C)$

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Wet Test for Basic Radical

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IIT 2015 Paper All IIT years →

$Al^{3+}$,$Fe^{3+}$,$Zn^{2+}$,and $Ni^{2+}$ ions are present in an acidic solution. Excess of ammonium chloride $(NH_4Cl)$ solution is added followed by the addition of ammonium hydroxide $(NH_4OH)$ solution. The resulting precipitate will contain:

Difficult

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Passing $H_2S$ gas into a mixture of $Mn^{2+}$,$Ni^{2+}$,$Cu^{2+}$ and $Hg^{2+}$ ions in an acidified aqueous solution precipitates

DifficultIIT 2011

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When $MgSO_4$ reacts with $NH_4OH$ and $Na_2HPO_4$,it forms a white crystalline substance. What is the formula of that substance?

Medium

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Match column-$I$ and column-$II$ with correct relation:

Column-$I$ Column-$II$

$(i)$ Blood like red colour $(a)$ $Fe_4[Fe(CN)_6]_3$

$(ii)$ Sodium nitroprusside $(b)$ $(NH_4)_2MoO_4$

$(iii)$ Ammonium molybdate $(c)$ $[Fe(SCN)]^{2+}$

$(iv)$ Ferri-ferro cyanide $(d)$ $Na_2[Fe(CN)_5NO]$

Column-$I$	Column-$II$
$(i)$ Blood like red colour	$(a)$ $Fe_4[Fe(CN)_6]_3$
$(ii)$ Sodium nitroprusside	$(b)$ $(NH_4)_2MoO_4$
$(iii)$ Ammonium molybdate	$(c)$ $[Fe(SCN)]^{2+}$
$(iv)$ Ferri-ferro cyanide	$(d)$ $Na_2[Fe(CN)_5NO]$

Easy

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When a salt is treated with sodium hydroxide solution,it gives gas $X$. On passing gas $X$ through reagent $Y$,a brown-coloured precipitate is formed. $X$ and $Y$ respectively,are

MediumJEE MAIN 2025

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The pair$(s)$ of ions where $BOTH$ the ions are precipitated upon passing $H_2S$ gas in the presence of dilute $HCl$,is(are):$(A) Ba^{2+}, Zn^{2+}$$(B) Bi^{3+}, Fe^{3+}$$(C) Cu^{2+}, Pb^{2+}$$(D) Hg^{2+}, Bi^{3+}$

Similar Questions

$Al^{3+}$,$Fe^{3+}$,$Zn^{2+}$,and $Ni^{2+}$ ions are present in an acidic solution. Excess of ammonium chloride $(NH_4Cl)$ solution is added followed by the addition of ammonium hydroxide $(NH_4OH)$ solution. The resulting precipitate will contain:

Passing $H_2S$ gas into a mixture of $Mn^{2+}$,$Ni^{2+}$,$Cu^{2+}$ and $Hg^{2+}$ ions in an acidified aqueous solution precipitates

When $MgSO_4$ reacts with $NH_4OH$ and $Na_2HPO_4$,it forms a white crystalline substance. What is the formula of that substance?

Match column-$I$ and column-$II$ with correct relation: Column-$I$ Column-$II$ $(i)$ Blood like red colour $(a)$ $Fe_4[Fe(CN)_6]_3$ $(ii)$ Sodium nitroprusside $(b)$ $(NH_4)_2MoO_4$ $(iii)$ Ammonium molybdate $(c)$ $[Fe(SCN)]^{2+}$ $(iv)$ Ferri-ferro cyanide $(d)$ $Na_2[Fe(CN)_5NO]$

When a salt is treated with sodium hydroxide solution,it gives gas $X$. On passing gas $X$ through reagent $Y$,a brown-coloured precipitate is formed. $X$ and $Y$ respectively,are

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The pair$(s)$ of ions where $BOTH$ the ions are precipitated upon passing $H_2S$ gas in the presence of dilute $HCl$,is(are):
$(A) Ba^{2+}, Zn^{2+}$
$(B) Bi^{3+}, Fe^{3+}$
$(C) Cu^{2+}, Pb^{2+}$
$(D) Hg^{2+}, Bi^{3+}$

Match column-$I$ and column-$II$ with correct relation:

Column-$I$ Column-$II$

$(i)$ Blood like red colour $(a)$ $Fe_4[Fe(CN)_6]_3$

$(ii)$ Sodium nitroprusside $(b)$ $(NH_4)_2MoO_4$

$(iii)$ Ammonium molybdate $(c)$ $[Fe(SCN)]^{2+}$

$(iv)$ Ferri-ferro cyanide $(d)$ $Na_2[Fe(CN)_5NO]$