(B) When $H_2S$ is passed through a solution containing an oxidising agent,the $H_2S$ is oxidised to colloidal sulphur $(S)$.$H_2S + [O] \rightarrow H

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(B) When $H_2S$ is passed through a solution containing an oxidising agent,the $H_2S$ is oxidised to colloidal sulphur $(S)$.$H_2S + [O] \rightarrow H_2O + S \text{ (milky appearance)}$.Therefore,the milkiness indicates the presence of an oxidising agent.

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

Medium

When $H_2S$ is passed through a solution in $Group-II$ analysis,it sometimes becomes milky. This indicates the presence of:

A
Acidic salt
B
An oxidising agent
C
Thiosulphate
D
$A$ reducing agent

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Wet Test for Basic Radical

Which of the following is an incorrect match for the precipitate (ppt) and its color?

Easy

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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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$A$ light greenish coloured salt was soluble in water. On passing $H_2S$ into the solution,a black precipitate was obtained which dissolved readily in $HCl$. The metal ion present is:

Difficult

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On passing $H_2S$ gas,a black precipitate of $II$ group is obtained. The mixture may not contain:

Medium

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An aqueous solution of an inorganic salt on treatment with $HCl$ gives a white precipitate. This solution contains

Medium

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When $H_2S$ is passed through a solution in $Group-II$ analysis,it sometimes becomes milky. This indicates the presence of:

Similar Questions

Which of the following is an incorrect match for the precipitate (ppt) and its color?

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 $(d)$ $Na_2[Fe(CN)_5NO]$

$A$ light greenish coloured salt was soluble in water. On passing $H_2S$ into the solution,a black precipitate was obtained which dissolved readily in $HCl$. The metal ion present is:

On passing $H_2S$ gas,a black precipitate of $II$ group is obtained. The mixture may not contain:

An aqueous solution of an inorganic salt on treatment with $HCl$ gives a white precipitate. This solution contains

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Online Exam Module

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 $(d)$ $Na_2[Fe(CN)_5NO]$