JEE Advance - Chemistry (2022 - Paper 1 Online - No. 18)
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 $\mathrm{FeSO}_{4}$, followed by acidification with conc. $\mathrm{H}_{2} \mathrm{SO}_{4}$, gives Prussian blue color. |
| (II) $o$-Cresol | (Q) Sodium fusion extract of the compound on treatment with sodium nitroprusside gives blood red color. |
| (III) Cysteine |
(R) Addition of the compound to a saturated solution of $\mathrm{NaHCO}_{3}$ results in effervescence. |
| (IV) Caprolactam |
(S) The compound reacts with bromine water to give a white precipitate. |
| (T) Treating the compound with neutral $\mathrm{FeCl}_{3}$ solution produces violet color. |
$\mathrm{I} \rightarrow \mathrm{P}, \mathrm{Q}$; II $\rightarrow \mathrm{S} ; \mathrm{III} \rightarrow \mathrm{Q}, \mathrm{R}$; IV $\rightarrow \mathrm{P}$
$\mathrm{I} \rightarrow \mathrm{P}$; II $\rightarrow \mathrm{R}$, $\mathrm{S}$; III $\rightarrow \mathrm{R}$; $\mathrm{IV} \rightarrow \mathrm{Q}, \mathrm{S}$
$\mathrm{I} \rightarrow \mathrm{Q}, \mathrm{S}$; II $\rightarrow \mathrm{P}, \mathrm{T}$; III $\rightarrow \mathrm{P}$; IV $\rightarrow \mathrm{S}$
$\mathrm{I} \rightarrow \mathrm{P}$, S; II $\rightarrow \mathrm{T}$; III $\rightarrow \mathrm{Q}, \mathrm{R}$; $\mathrm{IV} \rightarrow \mathrm{P}$
Explanation
(I) Aniline has $\mathrm{N}$ atoms hence gives prussian blue colour in Sodium fusion extract test. Aniline also gives white precipitate with Bromine water.
(II) $\mathbf{O}$-Cresol has phenolic group hence gives violet colour complex with netural $\mathrm{FeCl}_3$.
(III) Cysteine has 'S' atom, hence gives blood red color when odium S fusion extract of this compound is treated with sodium nitroprusside.
(IV) Caprolactam has $\mathrm{N}$ atom, hence sodium extract of this compound gives prussian blue color.
(II) $\mathbf{O}$-Cresol has phenolic group hence gives violet colour complex with netural $\mathrm{FeCl}_3$.
(III) Cysteine has 'S' atom, hence gives blood red color when odium S fusion extract of this compound is treated with sodium nitroprusside.
(IV) Caprolactam has $\mathrm{N}$ atom, hence sodium extract of this compound gives prussian blue color.
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