Match the compounds in LIST- I with the observations in LIST- II , and choose the correct option. LIST- I LIST- II (I) Aniline (P) Sodium fusion extract of the compound on boiling with FeSO _ 4 , followed by

Correct answer: D. I → P, S; II → T; III → Q, R; IV → P (I) Since it contains both carbon and nitrogen so its sodium fusion extract with boiling FeSO _ 4 , followed by acidification with conc. H _ 2 SO _ 4 gives Prussian blue colour. Fe ^ 2 + + 6 CN ^ - → [Fe (CN) _ 6 ] ^ 4 - 3 [Fe( CN _ 6 )] ^ - 4 + 4 Fe ^ 3 + xH _ 2 O → Fe _ 4 [Fe (CN) _ 6 ] _ 3 . xH _ 2 OPrussianblue I - (P), S (II) o - Cresol Violet coloured complex (III) Cysteine Since it has both, sulphur and nitrogen, so its sodium fusion extract will give blood red colour with Fe ^ 3 + and it has carboxylic group so it will give effervescence with NaHCO _ 3 . (IV) Caprolactam Its sodium fusion extract will give Prussian blue colour on boiling with FeSO _ 4 followed by acidification with conc. H _ 2 SO _ 4 .

JEE Advanced 2022Paper 1

Exam: JEE Advanced
Year: 2022
Paper: Paper 1
Subject: Chemistry
Chapter: Amines

JEE Advanced 2022 · Paper 1 · Chemistry · Amines

Match the compounds in LIST- I with the observations in LIST- II ,...

Match the compounds in LIST- $I$ with the observations in LIST- $II$ , and choose the correct option.

	LIST- $I$		LIST- $II$
\left(I\right) $</td> <td>Aniline</td> <td>\left(P\right)$	Sodium fusion extract of the compound on boiling with ${FeSO}_{4}$ , followed by acidification with conc. ${H}_{2}{SO}_{4}$ , gives Prussian blue color.
\left(II\right) $</td> <td>$ o - $Cresol</td> <td>\left(Q\right)$	Sodium fusion extract of the compound on treatment with sodium nitroprusside gives blood red color.
$\left(III\right)$	Cysteine	\left(R\right) $</td> <td>Addition of the compound to a saturated solution of$ {NaHCO}_{3} $results in effervescence.</td> </tr> <tr> <td>\left(IV\right)$	Caprolactam	\left(S\right) $</td> <td>The compound reacts with bromine water to give a white precipitate.</td> </tr> <tr> <td> </td> <td> </td> <td>$ \left(T\right) $</td> <td>Treating the compound with neutral$ {FeCl}_{3} solution produces violet color.

Options

A $I \to P, Q; II \to S; III \to Q, R; IV \to P$
B $I \to P; II \to R, S; III \to R; IV \to Q, S$
C $I \to Q, S; II \to P, T; III \to P; IV \to S$
D $I \to P, S; II \to T; III \to Q, R; IV \to P$

Correct answer

D. $I \to P, S; II \to T; III \to Q, R; IV \to P$

Step-by-step solution

$\left(I\right)$
Since it contains both carbon and nitrogen so its sodium fusion extract with boiling ${FeSO}_{4}$ , followed by acidification with conc. ${H}_{2}{SO}_{4}$ gives Prussian blue colour.
${Fe}^{2 +} + 6{CN}^{-} \to {\left[Fe{\left(CN\right)}_{6}\right]}^{4 -}$
$3{\left[Fe\left({CN}_{6}\right)\right]}^{- 4} + 4{Fe}^{3 +}\overset{{xH}_{2}O}{\to}{Fe}_{4}{\left[Fe{\left(CN\right)}_{6}\right]}_{3} . {xH}_{2}OPrussianblue$
$I - \left(P\right), S$
\left(II\right) o - $Cresol<img src="https://cdn-question-pool.Quantrex.app/pyq/jee_advanced/6129d54c-53a6-41c8-aab3-22af086f5d8c-image.png" style="width: 220px; height: 112px;" /> Violet coloured complex$ \left(III\right) $Cysteine<img src="https://cdn-question-pool.Quantrex.app/pyq/jee_advanced/9b1ee1a2-e261-4fdb-a8d8-143319ee2b12-image.png" style="width: 200px; height: 114px;" />Since it has both, sulphur and nitrogen, so its sodium fusion extract will give blood red colour with$ {Fe}^{3 +} $and it has carboxylic group so it will give effervescence with$ {NaHCO}_{3} $.\left(IV\right)$ Caprolactam
Its sodium fusion extract will give Prussian blue colour on boiling with ${FeSO}_{4}$ followed by acidification with conc. ${H}_{2}{SO}_{4}$ .

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