CUET Preparation Today
Match List-I with List-II
Choose the correct answer from the options given below. |
(A)-(IV), (B)-(III), (C)-(II), (D)-(I) (A)-(I), (B)-(III), (C)-(II), (D)-(IV) (A)-(I), (B)-(II), (C)-(IV), (D)-(III) (A)-(III), (B)-(IV), (C)-(I), (D)-(II) |
(A)-(IV), (B)-(III), (C)-(II), (D)-(I) |
The correct answer is Option (1) → (A)-(IV), (B)-(III), (C)-(II), (D)-(I)
(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. |
