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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317503 Assertion :
Sodium extract is boiled with conc. \(\mathrm{HNO}_{3}\) before testing halogen in it.
Reason :
Use of sodium extract to detect halogens is known as Lassaigne's test.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317504 Compound that will give positive Lassaigne's test for both nitrogen and halogen is

1 \(\mathrm{NH}_{2} \mathrm{OH} \cdot \mathrm{HCl}\)

2 \(\mathrm{CH}_{3} \mathrm{NH}_{2} \cdot \mathrm{HCl}\)

3 \(\mathrm{NH}_{4} \mathrm{Cl}\)

4 \(\mathrm{N}_{2} \mathrm{H}_{4} \mathrm{HCl}\)

JEE - 2023

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317506 Match the items of column I (Test for element) with column II (Products involved in the chemical reaction) and choose the correct option from the codes given below.
Column I
Column II
A
Test for nitrogen
P
\({\left( {{\rm{N}}{{\rm{H}}_{\rm{4}}}} \right)_{\rm{3}}}{\rm{P}}{{\rm{O}}_{\rm{4}}}{\rm{12Mo}}{{\rm{O}}_{\rm{3}}}\) (Ammonium phosphomolybdate)
B
Test for sulphur
Q
\({\rm{F}}{{\rm{e}}_{\rm{4}}}{\left[ {{\rm{Fe}}{{\left( {{\rm{CN}}} \right)}_{\rm{6}}}} \right]_{\rm{3}}}{\rm{.x}}{{\rm{H}}_{\rm{2}}}{\rm{O}}\) (Prussian blue)
C
Test for both nitrogen and sulphur
R
\({\rm{AgX}}\)
D
Test for halogens
S
\({\left[ {{\rm{Fe}}\left( {{\rm{SCN}}} \right)} \right]^{{\rm{2 + }}}}\) (Blood red)
E
Test for phosphorus
T
PbS Black

1 A - P, B - Q, C - R, D - S, E - T

2 A - Q, B - T, C - S, D - R, E - P

3 A - T, B - R, C - S, D - Q, E - P

4 A - S, B - Q, C - R, D - P, E - T

Explanation:

The correct match is
A. Test of nitrogen: \({\rm{6C}}{{\rm{N}}^{\rm{ - }}} + {\rm{F}}{{\rm{e}}^{{\rm{2 + }}}} \to {\left[ {{\rm{Fe(CN}}{{\rm{)}}_{\rm{6}}}} \right]^{{\rm{4 - }}}}\)
\({\text{3}}{\left[ {{\text{Fe(CN}}{{\text{)}}_{\text{6}}}} \right]^{{\text{4 - }}}}{\text{ + 4F}}{{\text{e}}^{{\text{3 + }}}}\xrightarrow{{{\text{x}}{{\text{H}}_{\text{2}}}{\text{O}}}}\)
\(\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,{\text{F}}{{\text{e}}_4}{\left[ {{\text{Fe}}{{({\text{CN}})}_6}} \right]_3} \cdot {\text{x}}{{\text{H}}_2}{\text{O}}\)
B. Test for sulphur: \(\mathrm{S}^{2-}+\mathrm{Pb}^{2+} \rightarrow \underset{\text { black }}{\mathrm{PbS}}\)
\(\mathrm{S}^{2-}+\left[\mathrm{Fe}(\mathrm{CN})_{5} \mathrm{NO}\right]^{2-} \rightarrow \underset{\text { Prussian blue }}{\left[\mathrm{Fe}(\mathrm{CN})_{5} \mathrm{NOS}\right]^{4-}}\)
C. Test for both nitrogen and sulphur:
\(\begin{aligned}& \mathrm{Na}+\mathrm{C}+\mathrm{N}+\mathrm{S} \rightarrow \mathrm{NaSCN} \\& \mathrm{Fe}^{3+}+\mathrm{SCN}^{-} \rightarrow[\mathrm{Fe}(\mathrm{SCN})]^{2-} \\& \text { D. Test for halogen: } \mathrm{X}^{-}+\mathrm{Ag}^{+} \rightarrow \mathrm{AgX} . \\& \text { E. Test for phosphorus: }\end{aligned}\)
\({\rm{N}}{{\rm{a}}_{\rm{3}}}{\rm{P}}{{\rm{O}}_{\rm{4}}}{\rm{ + 3HN}}{{\rm{O}}_{\rm{3}}} \to {{\rm{H}}_{\rm{3}}}{\rm{P}}{{\rm{O}}_{\rm{4}}}{\rm{ + 3NaN}}{{\rm{O}}_{\rm{3}}}\)
\({{\rm{H}}_{\rm{3}}}{\rm{P}}{{\rm{O}}_{\rm{4}}}{\rm{ + 12}}\mathop {{{\left( {{\rm{N}}{{\rm{H}}_{\rm{4}}}} \right)}_{\rm{2}}}{\rm{Mo}}}\limits_{{\rm{Ammonium}}\,\,{\rm{molybdate}}} {{\rm{O}}_{\rm{4}}}{\rm{ + 21HN}}{{\rm{O}}_{\rm{3}}} \to \)
\({\left( {{\rm{N}}{{\rm{H}}_{\rm{4}}}} \right)_{\rm{3}}}{\rm{P}}{{\rm{O}}_{\rm{4}}} \cdot {\rm{12Mo}}{{\rm{O}}_{\rm{3}}}{\rm{ + 21N}}{{\rm{H}}_{\rm{4}}}{\rm{N}}{{\rm{O}}_{\rm{3}}}{\rm{ + 12}}{{\rm{H}}_{\rm{2}}}{\rm{O}}.\)
So, the option (2) is correct.

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317507 Match the organic compounds in column -I with the Lassaigne's test results in column-II appropriately:
Column I
Column II
A
Aniline
P
Red colour with \(\mathrm{FeCl}_{3}\)
B
Benzenesulphonic acid
Q
Violet colour with sodium nitroprusside
C
Thiourea
R
Blue colour with hot and acidic solution of \(\mathrm{FeSO}_{4}\)

1 A - Q; B - R; C - P

2 A - R; B - P; C - Q

3 A - R; B - Q; C - P

4 A - Q; B - P; C - R

JEE - 2015

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317503 Assertion :
Sodium extract is boiled with conc. \(\mathrm{HNO}_{3}\) before testing halogen in it.
Reason :
Use of sodium extract to detect halogens is known as Lassaigne's test.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317504 Compound that will give positive Lassaigne's test for both nitrogen and halogen is

1 \(\mathrm{NH}_{2} \mathrm{OH} \cdot \mathrm{HCl}\)

2 \(\mathrm{CH}_{3} \mathrm{NH}_{2} \cdot \mathrm{HCl}\)

3 \(\mathrm{NH}_{4} \mathrm{Cl}\)

4 \(\mathrm{N}_{2} \mathrm{H}_{4} \mathrm{HCl}\)

JEE - 2023

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317506 Match the items of column I (Test for element) with column II (Products involved in the chemical reaction) and choose the correct option from the codes given below.
Column I
Column II
A
Test for nitrogen
P
\({\left( {{\rm{N}}{{\rm{H}}_{\rm{4}}}} \right)_{\rm{3}}}{\rm{P}}{{\rm{O}}_{\rm{4}}}{\rm{12Mo}}{{\rm{O}}_{\rm{3}}}\) (Ammonium phosphomolybdate)
B
Test for sulphur
Q
\({\rm{F}}{{\rm{e}}_{\rm{4}}}{\left[ {{\rm{Fe}}{{\left( {{\rm{CN}}} \right)}_{\rm{6}}}} \right]_{\rm{3}}}{\rm{.x}}{{\rm{H}}_{\rm{2}}}{\rm{O}}\) (Prussian blue)
C
Test for both nitrogen and sulphur
R
\({\rm{AgX}}\)
D
Test for halogens
S
\({\left[ {{\rm{Fe}}\left( {{\rm{SCN}}} \right)} \right]^{{\rm{2 + }}}}\) (Blood red)
E
Test for phosphorus
T
PbS Black

1 A - P, B - Q, C - R, D - S, E - T

2 A - Q, B - T, C - S, D - R, E - P

3 A - T, B - R, C - S, D - Q, E - P

4 A - S, B - Q, C - R, D - P, E - T

Explanation:

The correct match is
A. Test of nitrogen: \({\rm{6C}}{{\rm{N}}^{\rm{ - }}} + {\rm{F}}{{\rm{e}}^{{\rm{2 + }}}} \to {\left[ {{\rm{Fe(CN}}{{\rm{)}}_{\rm{6}}}} \right]^{{\rm{4 - }}}}\)
\({\text{3}}{\left[ {{\text{Fe(CN}}{{\text{)}}_{\text{6}}}} \right]^{{\text{4 - }}}}{\text{ + 4F}}{{\text{e}}^{{\text{3 + }}}}\xrightarrow{{{\text{x}}{{\text{H}}_{\text{2}}}{\text{O}}}}\)
\(\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,{\text{F}}{{\text{e}}_4}{\left[ {{\text{Fe}}{{({\text{CN}})}_6}} \right]_3} \cdot {\text{x}}{{\text{H}}_2}{\text{O}}\)
B. Test for sulphur: \(\mathrm{S}^{2-}+\mathrm{Pb}^{2+} \rightarrow \underset{\text { black }}{\mathrm{PbS}}\)
\(\mathrm{S}^{2-}+\left[\mathrm{Fe}(\mathrm{CN})_{5} \mathrm{NO}\right]^{2-} \rightarrow \underset{\text { Prussian blue }}{\left[\mathrm{Fe}(\mathrm{CN})_{5} \mathrm{NOS}\right]^{4-}}\)
C. Test for both nitrogen and sulphur:
\(\begin{aligned}& \mathrm{Na}+\mathrm{C}+\mathrm{N}+\mathrm{S} \rightarrow \mathrm{NaSCN} \\& \mathrm{Fe}^{3+}+\mathrm{SCN}^{-} \rightarrow[\mathrm{Fe}(\mathrm{SCN})]^{2-} \\& \text { D. Test for halogen: } \mathrm{X}^{-}+\mathrm{Ag}^{+} \rightarrow \mathrm{AgX} . \\& \text { E. Test for phosphorus: }\end{aligned}\)
\({\rm{N}}{{\rm{a}}_{\rm{3}}}{\rm{P}}{{\rm{O}}_{\rm{4}}}{\rm{ + 3HN}}{{\rm{O}}_{\rm{3}}} \to {{\rm{H}}_{\rm{3}}}{\rm{P}}{{\rm{O}}_{\rm{4}}}{\rm{ + 3NaN}}{{\rm{O}}_{\rm{3}}}\)
\({{\rm{H}}_{\rm{3}}}{\rm{P}}{{\rm{O}}_{\rm{4}}}{\rm{ + 12}}\mathop {{{\left( {{\rm{N}}{{\rm{H}}_{\rm{4}}}} \right)}_{\rm{2}}}{\rm{Mo}}}\limits_{{\rm{Ammonium}}\,\,{\rm{molybdate}}} {{\rm{O}}_{\rm{4}}}{\rm{ + 21HN}}{{\rm{O}}_{\rm{3}}} \to \)
\({\left( {{\rm{N}}{{\rm{H}}_{\rm{4}}}} \right)_{\rm{3}}}{\rm{P}}{{\rm{O}}_{\rm{4}}} \cdot {\rm{12Mo}}{{\rm{O}}_{\rm{3}}}{\rm{ + 21N}}{{\rm{H}}_{\rm{4}}}{\rm{N}}{{\rm{O}}_{\rm{3}}}{\rm{ + 12}}{{\rm{H}}_{\rm{2}}}{\rm{O}}.\)
So, the option (2) is correct.

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317507 Match the organic compounds in column -I with the Lassaigne's test results in column-II appropriately:
Column I
Column II
A
Aniline
P
Red colour with \(\mathrm{FeCl}_{3}\)
B
Benzenesulphonic acid
Q
Violet colour with sodium nitroprusside
C
Thiourea
R
Blue colour with hot and acidic solution of \(\mathrm{FeSO}_{4}\)

1 A - Q; B - R; C - P

2 A - R; B - P; C - Q

3 A - R; B - Q; C - P

4 A - Q; B - P; C - R

JEE - 2015

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317503 Assertion :
Sodium extract is boiled with conc. \(\mathrm{HNO}_{3}\) before testing halogen in it.
Reason :
Use of sodium extract to detect halogens is known as Lassaigne's test.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317504 Compound that will give positive Lassaigne's test for both nitrogen and halogen is

1 \(\mathrm{NH}_{2} \mathrm{OH} \cdot \mathrm{HCl}\)

2 \(\mathrm{CH}_{3} \mathrm{NH}_{2} \cdot \mathrm{HCl}\)

3 \(\mathrm{NH}_{4} \mathrm{Cl}\)

4 \(\mathrm{N}_{2} \mathrm{H}_{4} \mathrm{HCl}\)

JEE - 2023

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317506 Match the items of column I (Test for element) with column II (Products involved in the chemical reaction) and choose the correct option from the codes given below.
Column I
Column II
A
Test for nitrogen
P
\({\left( {{\rm{N}}{{\rm{H}}_{\rm{4}}}} \right)_{\rm{3}}}{\rm{P}}{{\rm{O}}_{\rm{4}}}{\rm{12Mo}}{{\rm{O}}_{\rm{3}}}\) (Ammonium phosphomolybdate)
B
Test for sulphur
Q
\({\rm{F}}{{\rm{e}}_{\rm{4}}}{\left[ {{\rm{Fe}}{{\left( {{\rm{CN}}} \right)}_{\rm{6}}}} \right]_{\rm{3}}}{\rm{.x}}{{\rm{H}}_{\rm{2}}}{\rm{O}}\) (Prussian blue)
C
Test for both nitrogen and sulphur
R
\({\rm{AgX}}\)
D
Test for halogens
S
\({\left[ {{\rm{Fe}}\left( {{\rm{SCN}}} \right)} \right]^{{\rm{2 + }}}}\) (Blood red)
E
Test for phosphorus
T
PbS Black

1 A - P, B - Q, C - R, D - S, E - T

2 A - Q, B - T, C - S, D - R, E - P

3 A - T, B - R, C - S, D - Q, E - P

4 A - S, B - Q, C - R, D - P, E - T

Explanation:

The correct match is
A. Test of nitrogen: \({\rm{6C}}{{\rm{N}}^{\rm{ - }}} + {\rm{F}}{{\rm{e}}^{{\rm{2 + }}}} \to {\left[ {{\rm{Fe(CN}}{{\rm{)}}_{\rm{6}}}} \right]^{{\rm{4 - }}}}\)
\({\text{3}}{\left[ {{\text{Fe(CN}}{{\text{)}}_{\text{6}}}} \right]^{{\text{4 - }}}}{\text{ + 4F}}{{\text{e}}^{{\text{3 + }}}}\xrightarrow{{{\text{x}}{{\text{H}}_{\text{2}}}{\text{O}}}}\)
\(\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,{\text{F}}{{\text{e}}_4}{\left[ {{\text{Fe}}{{({\text{CN}})}_6}} \right]_3} \cdot {\text{x}}{{\text{H}}_2}{\text{O}}\)
B. Test for sulphur: \(\mathrm{S}^{2-}+\mathrm{Pb}^{2+} \rightarrow \underset{\text { black }}{\mathrm{PbS}}\)
\(\mathrm{S}^{2-}+\left[\mathrm{Fe}(\mathrm{CN})_{5} \mathrm{NO}\right]^{2-} \rightarrow \underset{\text { Prussian blue }}{\left[\mathrm{Fe}(\mathrm{CN})_{5} \mathrm{NOS}\right]^{4-}}\)
C. Test for both nitrogen and sulphur:
\(\begin{aligned}& \mathrm{Na}+\mathrm{C}+\mathrm{N}+\mathrm{S} \rightarrow \mathrm{NaSCN} \\& \mathrm{Fe}^{3+}+\mathrm{SCN}^{-} \rightarrow[\mathrm{Fe}(\mathrm{SCN})]^{2-} \\& \text { D. Test for halogen: } \mathrm{X}^{-}+\mathrm{Ag}^{+} \rightarrow \mathrm{AgX} . \\& \text { E. Test for phosphorus: }\end{aligned}\)
\({\rm{N}}{{\rm{a}}_{\rm{3}}}{\rm{P}}{{\rm{O}}_{\rm{4}}}{\rm{ + 3HN}}{{\rm{O}}_{\rm{3}}} \to {{\rm{H}}_{\rm{3}}}{\rm{P}}{{\rm{O}}_{\rm{4}}}{\rm{ + 3NaN}}{{\rm{O}}_{\rm{3}}}\)
\({{\rm{H}}_{\rm{3}}}{\rm{P}}{{\rm{O}}_{\rm{4}}}{\rm{ + 12}}\mathop {{{\left( {{\rm{N}}{{\rm{H}}_{\rm{4}}}} \right)}_{\rm{2}}}{\rm{Mo}}}\limits_{{\rm{Ammonium}}\,\,{\rm{molybdate}}} {{\rm{O}}_{\rm{4}}}{\rm{ + 21HN}}{{\rm{O}}_{\rm{3}}} \to \)
\({\left( {{\rm{N}}{{\rm{H}}_{\rm{4}}}} \right)_{\rm{3}}}{\rm{P}}{{\rm{O}}_{\rm{4}}} \cdot {\rm{12Mo}}{{\rm{O}}_{\rm{3}}}{\rm{ + 21N}}{{\rm{H}}_{\rm{4}}}{\rm{N}}{{\rm{O}}_{\rm{3}}}{\rm{ + 12}}{{\rm{H}}_{\rm{2}}}{\rm{O}}.\)
So, the option (2) is correct.

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317507 Match the organic compounds in column -I with the Lassaigne's test results in column-II appropriately:
Column I
Column II
A
Aniline
P
Red colour with \(\mathrm{FeCl}_{3}\)
B
Benzenesulphonic acid
Q
Violet colour with sodium nitroprusside
C
Thiourea
R
Blue colour with hot and acidic solution of \(\mathrm{FeSO}_{4}\)

1 A - Q; B - R; C - P

2 A - R; B - P; C - Q

3 A - R; B - Q; C - P

4 A - Q; B - P; C - R

JEE - 2015

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317503 Assertion :
Sodium extract is boiled with conc. \(\mathrm{HNO}_{3}\) before testing halogen in it.
Reason :
Use of sodium extract to detect halogens is known as Lassaigne's test.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317504 Compound that will give positive Lassaigne's test for both nitrogen and halogen is

1 \(\mathrm{NH}_{2} \mathrm{OH} \cdot \mathrm{HCl}\)

2 \(\mathrm{CH}_{3} \mathrm{NH}_{2} \cdot \mathrm{HCl}\)

3 \(\mathrm{NH}_{4} \mathrm{Cl}\)

4 \(\mathrm{N}_{2} \mathrm{H}_{4} \mathrm{HCl}\)

JEE - 2023

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317506 Match the items of column I (Test for element) with column II (Products involved in the chemical reaction) and choose the correct option from the codes given below.
Column I
Column II
A
Test for nitrogen
P
\({\left( {{\rm{N}}{{\rm{H}}_{\rm{4}}}} \right)_{\rm{3}}}{\rm{P}}{{\rm{O}}_{\rm{4}}}{\rm{12Mo}}{{\rm{O}}_{\rm{3}}}\) (Ammonium phosphomolybdate)
B
Test for sulphur
Q
\({\rm{F}}{{\rm{e}}_{\rm{4}}}{\left[ {{\rm{Fe}}{{\left( {{\rm{CN}}} \right)}_{\rm{6}}}} \right]_{\rm{3}}}{\rm{.x}}{{\rm{H}}_{\rm{2}}}{\rm{O}}\) (Prussian blue)
C
Test for both nitrogen and sulphur
R
\({\rm{AgX}}\)
D
Test for halogens
S
\({\left[ {{\rm{Fe}}\left( {{\rm{SCN}}} \right)} \right]^{{\rm{2 + }}}}\) (Blood red)
E
Test for phosphorus
T
PbS Black

1 A - P, B - Q, C - R, D - S, E - T

2 A - Q, B - T, C - S, D - R, E - P

3 A - T, B - R, C - S, D - Q, E - P

4 A - S, B - Q, C - R, D - P, E - T

Explanation:

The correct match is
A. Test of nitrogen: \({\rm{6C}}{{\rm{N}}^{\rm{ - }}} + {\rm{F}}{{\rm{e}}^{{\rm{2 + }}}} \to {\left[ {{\rm{Fe(CN}}{{\rm{)}}_{\rm{6}}}} \right]^{{\rm{4 - }}}}\)
\({\text{3}}{\left[ {{\text{Fe(CN}}{{\text{)}}_{\text{6}}}} \right]^{{\text{4 - }}}}{\text{ + 4F}}{{\text{e}}^{{\text{3 + }}}}\xrightarrow{{{\text{x}}{{\text{H}}_{\text{2}}}{\text{O}}}}\)
\(\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,{\text{F}}{{\text{e}}_4}{\left[ {{\text{Fe}}{{({\text{CN}})}_6}} \right]_3} \cdot {\text{x}}{{\text{H}}_2}{\text{O}}\)
B. Test for sulphur: \(\mathrm{S}^{2-}+\mathrm{Pb}^{2+} \rightarrow \underset{\text { black }}{\mathrm{PbS}}\)
\(\mathrm{S}^{2-}+\left[\mathrm{Fe}(\mathrm{CN})_{5} \mathrm{NO}\right]^{2-} \rightarrow \underset{\text { Prussian blue }}{\left[\mathrm{Fe}(\mathrm{CN})_{5} \mathrm{NOS}\right]^{4-}}\)
C. Test for both nitrogen and sulphur:
\(\begin{aligned}& \mathrm{Na}+\mathrm{C}+\mathrm{N}+\mathrm{S} \rightarrow \mathrm{NaSCN} \\& \mathrm{Fe}^{3+}+\mathrm{SCN}^{-} \rightarrow[\mathrm{Fe}(\mathrm{SCN})]^{2-} \\& \text { D. Test for halogen: } \mathrm{X}^{-}+\mathrm{Ag}^{+} \rightarrow \mathrm{AgX} . \\& \text { E. Test for phosphorus: }\end{aligned}\)
\({\rm{N}}{{\rm{a}}_{\rm{3}}}{\rm{P}}{{\rm{O}}_{\rm{4}}}{\rm{ + 3HN}}{{\rm{O}}_{\rm{3}}} \to {{\rm{H}}_{\rm{3}}}{\rm{P}}{{\rm{O}}_{\rm{4}}}{\rm{ + 3NaN}}{{\rm{O}}_{\rm{3}}}\)
\({{\rm{H}}_{\rm{3}}}{\rm{P}}{{\rm{O}}_{\rm{4}}}{\rm{ + 12}}\mathop {{{\left( {{\rm{N}}{{\rm{H}}_{\rm{4}}}} \right)}_{\rm{2}}}{\rm{Mo}}}\limits_{{\rm{Ammonium}}\,\,{\rm{molybdate}}} {{\rm{O}}_{\rm{4}}}{\rm{ + 21HN}}{{\rm{O}}_{\rm{3}}} \to \)
\({\left( {{\rm{N}}{{\rm{H}}_{\rm{4}}}} \right)_{\rm{3}}}{\rm{P}}{{\rm{O}}_{\rm{4}}} \cdot {\rm{12Mo}}{{\rm{O}}_{\rm{3}}}{\rm{ + 21N}}{{\rm{H}}_{\rm{4}}}{\rm{N}}{{\rm{O}}_{\rm{3}}}{\rm{ + 12}}{{\rm{H}}_{\rm{2}}}{\rm{O}}.\)
So, the option (2) is correct.

CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317507 Match the organic compounds in column -I with the Lassaigne's test results in column-II appropriately:
Column I
Column II
A
Aniline
P
Red colour with \(\mathrm{FeCl}_{3}\)
B
Benzenesulphonic acid
Q
Violet colour with sodium nitroprusside
C
Thiourea
R
Blue colour with hot and acidic solution of \(\mathrm{FeSO}_{4}\)

1 A - Q; B - R; C - P

2 A - R; B - P; C - Q

3 A - R; B - Q; C - P

4 A - Q; B - P; C - R

JEE - 2015

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