Match List-I with List-II
|
List-I (Name of the test/Reaction) |
List-II (Species) |
|
(A) Tollen's Test |
(I) $Cu^{2+}$ and $OH^-$ |
|
(B) Fehling's Test |
(II) $Zn-Hg$ and $HCl$ |
|
(C) Clemmensen reduction |
(III) $2[Ag(NH_3)_2]^+$ and $OH^-$ |
|
(D) Wolff Kishner reduction |
(IV) Hydrazine KOH/ethylene glycol |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → (A)-(III), (B)-(I), (C)-(II), (D)-(IV)
|
List-I (Name of the test/Reaction) |
List-II (Species) |
|
(A) Tollen's Test |
(III) $2[Ag(NH_3)_2]^+$ and $OH^-$ |
|
(B) Fehling's Test |
(I) $Cu^{2+}$ and $OH^-$ |
|
(C) Clemmensen reduction |
(II) $Zn-Hg$ and $HCl$ |
|
(D) Wolff Kishner reduction |
(IV) Hydrazine KOH/ethylene glycol |
- (A) Tollen's Test: Used to distinguish aldehydes (positive test gives silver mirror). Reagent: Ammoniacal silver nitrate, i.e., 2[Ag(NH₃)₂]⁺ and OH⁻ (III).
- (B) Fehling's Test: Test for reducing sugars/aldehydes (positive test gives red ppt. of Cu₂O). Reagent: Alkaline solution containing Cu²⁺ and OH⁻ (I).
- (C) Clemmensen reduction: Reduces carbonyl (C=O) to CH₂ in ketones/aldehydes (acidic conditions). Reagent: Zn-Hg and HCl (II).
- (D) Wolff-Kishner reduction: Reduces carbonyl (C=O) to CH₂ (basic conditions). Reagent: Hydrazine + KOH/ethylene glycol (IV).