Match the compounds/ions in Column I with their properties/reactions in Column II. Indicate your answer by darkening the appropriate bubbles of the $4 \times 4$ matrix given in the ORS. | Column I | Column II | |----------|----------| | (A) $\mathrm{C}_{6}\mathrm{H}_{5}\mathrm{CHO}$ | (p) gives precipitate with 2,4-dinitrophenylhydrazine | | (B) $\mathrm{CH}_{3}\mathrm{C} \equiv \mathrm{CH}$ | (q) gives precipitate with $\mathrm{AgNO}_{3}$ | | (C) $\mathrm{CN}^{-}$ | (r) is a nucleophile | | (D) $\mathrm{I}^{-}$ | (s) is involved in cyanohydrin formation |

(A) Benzaldehyde ( ) is a carbonyl compound that gives a precipitate with 2,4-DNP (p), gives a silver mirror with ammoniacal (q), and reacts with CN⁻ to form cyanohydrin (s). (B) Propyne ( ) has a terminal alkyne that gives white precipitate with ammoniacal (q). (C) Cyanide ion ( ) is a nucleophile…

General Organic Chemistry — JEE Advanced · 2007 · 08 Apr 2007 · Paper 2 Question with Solution

Match the compounds/ions in Column I with their properties/reactions in Column II. Indicate your answer by darkening the appropriate bubbles of the

4 \times 4

matrix given in the ORS.

Column I	Column II
(A) $C_{6} H_{5} CHO$	(p) gives precipitate with 2,4-dinitrophenylhydrazine
(B) $CH_{3} C \equiv CH$	(q) gives precipitate with $AgNO_{3}$
(C) $CN^{-}$	(r) is a nucleophile
(D) $I^{-}$	(s) is involved in cyanohydrin formation

Answer: A → I, A → IV, B → II, C → II, C → III, C → IV, D → II, D → III

Solution

(A) Benzaldehyde (

C_{6} H_{5} CHO

) is a carbonyl compound that gives a precipitate with 2,4-DNP (p), gives a silver mirror with ammoniacal

AgNO_{3}

(q), and reacts with CN⁻ to form cyanohydrin (s).

(B) Propyne (

CH_{3} C \equiv CH

) has a terminal alkyne that gives white precipitate with ammoniacal

AgNO_{3}

(q).

(C) Cyanide ion (

CN^{-}

) is a nucleophile (r), forms precipitate AgCN with

AgNO_{3}

(q), and is involved in cyanohydrin formation (s).

(D) Iodide ion (

I^{-}

) is a nucleophile (r) and gives yellow precipitate AgI with

AgNO_{3}

(q).

JEE Advanced · 2007 · 08 Apr 2007 · Paper 2 · Match the columns

JEE Advanced · 2007 · 08 Apr 2007 · Paper 2 · General Organic Chemistry

Solution

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