Question

Match the list-I with list-II 

• A. (I)-(Q), (II)-(S), (III)-(R), (IV)-(R)
• B. (I)-(P), (II)-(S), (III)-(R), (IV)-(R)
• C. (I)-(Q), (II)-(S), (III)-(P), (IV)-(R)
• D. (I)-(P), (II)-(S), (III)-(P), (IV)-(S)

Answer 1

The Correct Option is B

Step 1: Understanding the Question:
The question asks to match common chemical reagents and synthetic methods with their corresponding chemical components or reaction conditions.
Step 2: Detailed Explanation:
(I) Tollen's Reagent: It is ammoniacal silver nitrate, represented as \([Ag(NH_{3})_{2}]OH\). It is used to distinguish aldehydes from ketones.
(II) Fehling's Solution: It consists of two solutions, Fehling A (aqueous copper sulphate) and Fehling B (alkaline sodium potassium tartrate). The active oxidizing species is \(Cu^{2+}\) in an alkaline medium (\(OH^{-}\)).
(III) Williamson's Synthesis: This is a standard laboratory method for the preparation of symmetrical and unsymmetrical ethers. It involves the nucleophilic substitution (\(S_{N}2\)) of an alkyl halide (\(R-X\)) by a sodium alkoxide (\(R-O^{-}Na^{+}\)).
(IV) Baeyer's Reagent: It is a cold, dilute, alkaline solution of potassium permanganate (\(dil. KMnO_{4}\)). It is used as a qualitative test for the presence of unsaturation (double or triple bonds) in organic compounds.
Step 3: Final Answer:
Based on the chemical identities:
(I) matches with (b)
(II) matches with (a)
(III) matches with (c)
(IV) matches with (d)