(A) For the testing of halogens,$HNO_3$ (Nitric acid) is added to the sodium extract. This is done because if $CN^-$ or $S^{2-}$ ions are present in t

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(A) For the testing of halogens,$HNO_3$ (Nitric acid) is added to the sodium extract. This is done because if $CN^-$ or $S^{2-}$ ions are present in the extract,they would interfere with the test by forming $AgCN$ or $Ag_2S$ precipitates. $HNO_3$ decomposes these ions into $HCN$ and $H_2S$ gases,respectively,which are then removed by boiling,ensuring that only halides react with $AgNO_3$.

Class 11 Chemistry 8-3.Organic Chemistry : Purification and characterization Chemical analysis of organic compounds

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Which of the following compounds is added to the sodium extract before the addition of silver nitrate for the testing of halogens?

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A
Nitric acid
B
Ammonia
C
Hydrochloric acid
D
Sodium hydroxide

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Class 11 Questions

Class 11

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Chapter

8-3.Organic Chemistry : Purification and characterization

Subtopic

Chemical analysis of organic compounds

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Which compound is formed as a violet-colored complex during the test for sulfur?

Easy

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Match the List-$I$ with List-$II$:

List-$I$ (Reagent) List-$II$ (Functional Group detected)

$A$. Sodium bicarbonate solution $I$. Double bond/unsaturation

$B$. Neutral ferric chloride $II$. Carboxylic acid

$C$. Ceric ammonium nitrate $III$. Phenolic $-OH$

$D$. Alkaline $KMnO_4$ $IV$. Alcoholic $-OH$

Choose the correct answer from the options given below:

DifficultJEE MAIN 2025

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Why is the Lassaigne's extract boiled with concentrated $HNO_3$ before testing for halogens?

Medium

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How is the purity of a compound determined?

Medium

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Match Column $-I$ with Column $-II$.

Column $-I$ Column $-II$

$(A).$ Dumas method $(3).$ Nitrogen gas

$(B).$ Kjeldahl's method $(5).$ Ammonium sulphate

$(C).$ Carius method $(1).$ $AgNO_3$

$(D).$ Chromatography $(2).$ Silica gel

$(E).$ Homolytic fission $(4).$ Free radical

Column $-I$	Column $-II$
$(A).$ Dumas method	$(3).$ Nitrogen gas
$(B).$ Kjeldahl's method	$(5).$ Ammonium sulphate
$(C).$ Carius method	$(1).$ $AgNO_3$
$(D).$ Chromatography	$(2).$ Silica gel
$(E).$ Homolytic fission	$(4).$ Free radical

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List-$I$ (Reagent)	List-$II$ (Functional Group detected)
$A$. Sodium bicarbonate solution	$I$. Double bond/unsaturation
$B$. Neutral ferric chloride	$II$. Carboxylic acid
$C$. Ceric ammonium nitrate	$III$. Phenolic $-OH$
$D$. Alkaline $KMnO_4$	$IV$. Alcoholic $-OH$

Which of the following compounds is added to the sodium extract before the addition of silver nitrate for the testing of halogens?

Similar Questions

Which compound is formed as a violet-colored complex during the test for sulfur?

Why is the Lassaigne's extract boiled with concentrated $HNO_3$ before testing for halogens?

How is the purity of a compound determined?

Match Column $-I$ with Column $-II$. Column $-I$ Column $-II$ $(A).$ Dumas method $(3).$ Nitrogen gas $(B).$ Kjeldahl's method $(5).$ Ammonium sulphate $(C).$ Carius method $(1).$ $AgNO_3$ $(D).$ Chromatography $(2).$ Silica gel $(E).$ Homolytic fission $(4).$ Free radical

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Match Column $-I$ with Column $-II$.

Column $-I$ Column $-II$

$(A).$ Dumas method $(3).$ Nitrogen gas

$(B).$ Kjeldahl's method $(5).$ Ammonium sulphate

$(C).$ Carius method $(1).$ $AgNO_3$

$(D).$ Chromatography $(2).$ Silica gel

$(E).$ Homolytic fission $(4).$ Free radical