Match List-I with List-II
|
List-I Reagent |
List-II Characteristic of Compound |
|
(A) Tollen's Reagent |
(I) Aliphatic aldehyde |
|
(B) lodoform test |
(II) Tertiary alcohol |
|
(C) Lucas Reagent |
(III) Methyl ketone |
|
(D) Fehling's Reagent |
(IV) Aliphatic and aromatic aldehydes |
Choose the correct answer from the options given below.
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → (A)-(IV), (B)-(III), (C)-(II), (D)-(I)
|
List-I Reagent |
List-II Characteristic of Compound |
|
(A) Tollen's Reagent |
(IV) Aliphatic and aromatic aldehydes |
|
(B) lodoform test |
(III) Methyl ketone |
|
(C) Lucas Reagent |
(II) Tertiary alcohol |
|
(D) Fehling's Reagent |
(I) Aliphatic aldehyde |
(A) Tollen's Reagent: This is a mild oxidizing agent (ammoniacal silver nitrate) that reacts with both aliphatic and aromatic aldehydes to form a silver mirror. It does not react with most ketones.
(B) Iodoform Test: This test is specific for compounds containing a methyl ketone ($CH_3CO-$) group or alcohols that can be oxidized to one ($CH_3CH(OH)-$). A positive result is indicated by a yellow precipitate of iodoform ($CHI_3$).
(C) Lucas Reagent: A mixture of concentrated $HCl$ and anhydrous $ZnCl_2$ used to distinguish between alcohols. Tertiary alcohols react immediately to produce turbidity (cloudiness), secondary alcohols take a few minutes, and primary alcohols do not react at room temperature.
(D) Fehling's Reagent: This reagent is used to identify aliphatic aldehydes. Unlike Tollen's reagent, Fehling's solution is generally too weak to oxidize aromatic aldehydes like benzaldehyde.