(B) The brown ring test for nitrate ions involves the formation of the complex $[Fe(H_2O)_5(NO)]SO_4$,which is known as nitrosoferrous sulphate.Option

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$B$. The ring is formed due to a nitroferrous sulphate complex.

(B) The brown ring test for nitrate ions involves the formation of the complex $[Fe(H_2O)_5(NO)]SO_4$,which is known as nitrosoferrous sulphate.Option $B$ is incorrect because the complex is nitrosoferrous sulphate,not nitroferrous sulphate.Option $D$ is also incorrect as heating a nitrate salt with conc. $H_2SO_4$ produces reddish-brown fumes of $NO_2$ gas,not light brown fumes.

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

Easy

Which statement is not true with respect to the nitrate ion test?

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A
$A$. $A$ dark brown ring is formed at the junction of two solutions.
B
$B$. The ring is formed due to a nitroferrous sulphate complex.
C
$C$. The brown complex is $[Fe(H_2O)_5(NO)]SO_4$.
D
$D$. Heating the nitrate salt with conc. $H_2SO_4$,light brown fumes are evolved.

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Wet Test for Acid Radical

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Aqueous solution of a salt $(A)$ forms a dense white precipitate with $BaCl_{2}$ solution. The precipitate dissolves in dilute $HCl$ to produce a gas $(B)$ which decolourises acidified $KMnO_{4}$ solution. $A$ and $B$ respectively are

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$A$ brown ring appears in the test for

MediumAIIMS 1996

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Choose the correct matching $:-$

Column-$I$ Column-$II$

$P$. $NaBr + \text{Conc. } H_2SO_4 \rightarrow$ $A$. Colourless gas

$Q$. $Na_2S + \text{dil. } HCl \rightarrow$ $B$. Brown colour

$R$. $NaNO_2 + \text{dil. } HCl \rightarrow$ $C$. Rotten egg smell

$S$. $NaNO_3 + \text{Conc. } H_2SO_4 \rightarrow$ $D$. Paramagnetic

Column-$I$	Column-$II$
$P$. $NaBr + \text{Conc. } H_2SO_4 \rightarrow$	$A$. Colourless gas
$Q$. $Na_2S + \text{dil. } HCl \rightarrow$	$B$. Brown colour
$R$. $NaNO_2 + \text{dil. } HCl \rightarrow$	$C$. Rotten egg smell
$S$. $NaNO_3 + \text{Conc. } H_2SO_4 \rightarrow$	$D$. Paramagnetic