JEE Advanced 2022 · Paper 1 · Chemistry Q18

ChemistryList match+3 / -1Question 54 of 54

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

LIST-I

LIST-II

P
Sodium fusion extract of the compound on boiling with $\ce{FeSO4}$ , followed by acidification with conc. $\ce{H2SO4}$ , gives Prussian blue color.
Q
Sodium fusion extract of the compound on treatment with sodium nitroprusside gives blood red color.
R
Addition of the compound to a saturated solution of $\ce{NaHCO3}$ results in effervescence.
S
The compound reacts with bromine water to give a white precipitate.
T
Treating the compound with neutral $\ce{FeCl3}$ solution produces violet color.

I → P, Q; II → S; III → Q, R; IV → P

I → P; II → R, S; III → R; IV → Q, S

I → Q, S; II → P, T; III → P; IV → S

I → P, S; II → T; III → Q, R; IV → P

Answer and worked solution

Official answer: D

(I) Aniline.

(II) o-Cresol. As a phenol, it gives a violet colour with neutral $\ce{FeCl3}$ (T).

(III) Cysteine.

It contains S, so the fusion extract with sodium nitroprusside gives the colour test for sulphur (Q).
Its COOH group releases $\ce{CO2}$ from $\ce{NaHCO3}$ (R).

(IV) Caprolactam. It contains N, so it gives Prussian blue (P).

This is option (D).

JEE Advanced 2022 · Paper 1, Chemistry question 18