(D) When chromyl chloride $(CrO_2Cl_2)$ vapours are passed into $NaOH$ solution,sodium chromate $(Na_2CrO_4)$ is formed.$CrO_2Cl_2 + 4NaOH \rightarrow

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$A$ yellow precipitate will be obtained

(D) When chromyl chloride $(CrO_2Cl_2)$ vapours are passed into $NaOH$ solution,sodium chromate $(Na_2CrO_4)$ is formed.$CrO_2Cl_2 + 4NaOH \rightarrow Na_2CrO_4 + 2NaCl + 2H_2O$When this solution is acidified with acetic acid $(CH_3COOH)$ and treated with lead acetate $((CH_3COO)_2Pb)$,a yellow precipitate of lead chromate $(PbCrO_4)$ is formed.$Na_2CrO_4 + (CH_3COO)_2Pb \rightarrow PbCrO_4 \downarrow (\text{yellow ppt.}) + 2CH_3COONa$

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

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Chromyl chloride vapours are dissolved in $NaOH$ and acetic acid and lead acetate solution is added,then

A
The solution will remain colourless
B
The solution will become dark green
C
$A$ yellow solution will be obtained
D
$A$ yellow precipitate will be obtained

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Wet Test for Acid Radical

$A$ salt gives violet vapours when treated with conc. $H_2SO_4$. It contains

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In a test tube containing a salt, a few drops of dilute $\text{H}_2\text{SO}_4$ were added, which gave colourless vapours having the smell of vinegar. The vapours turned the blue litmus paper red. Identify the correct anion from the following:

MediumNEET 2026

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The reagent$(s)$ that can selectively precipitate $S^{2-}$ from a mixture of $S^{2-}$ and $SO_4^{2-}$ in aqueous solution is(are):
$(A)$ $CuCl_2$
$(B)$ $BaCl_2$
$(C)$ $Pb(CH_3COO)_2$
$(D)$ $Na_2[Fe(CN)_5NO]$

MediumIIT 2016

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$X + H_2SO_4 \to Y$ (a colorless gas with a pungent smell).
$Y + K_2Cr_2O_7 + H_2SO_4 \to$ green colored solution.
What are $X$ and $Y$?

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The phosphate radical reacts with ammonium molybdate to form a precipitate of which color?

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Chromyl chloride vapours are dissolved in $NaOH$ and acetic acid and lead acetate solution is added,then

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$A$ salt gives violet vapours when treated with conc. $H_2SO_4$. It contains

In a test tube containing a salt, a few drops of dilute $\text{H}_2\text{SO}_4$ were added, which gave colourless vapours having the smell of vinegar. The vapours turned the blue litmus paper red. Identify the correct anion from the following:

The reagent$(s)$ that can selectively precipitate $S^{2-}$ from a mixture of $S^{2-}$ and $SO_4^{2-}$ in aqueous solution is(are):$(A)$ $CuCl_2$$(B)$ $BaCl_2$$(C)$ $Pb(CH_3COO)_2$$(D)$ $Na_2[Fe(CN)_5NO]$

$X + H_2SO_4 \to Y$ (a colorless gas with a pungent smell).$Y + K_2Cr_2O_7 + H_2SO_4 \to$ green colored solution.What are $X$ and $Y$?

The phosphate radical reacts with ammonium molybdate to form a precipitate of which color?

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The reagent$(s)$ that can selectively precipitate $S^{2-}$ from a mixture of $S^{2-}$ and $SO_4^{2-}$ in aqueous solution is(are):
$(A)$ $CuCl_2$
$(B)$ $BaCl_2$
$(C)$ $Pb(CH_3COO)_2$
$(D)$ $Na_2[Fe(CN)_5NO]$

$X + H_2SO_4 \to Y$ (a colorless gas with a pungent smell).
$Y + K_2Cr_2O_7 + H_2SO_4 \to$ green colored solution.
What are $X$ and $Y$?