CUET Preparation Today
Match List-I with List-II
Choose the correct answer from the options given below: |
(A)-(I), (B)-(II), (C)-(III), (D)-(IV) (A)-(I), (B)-(III), (C)-(II), (D)-(IV) (A)-(II), (B)-(I), (C)-(IV), (D)-(III) (A)-(III), (B)-(IV), (C)-(I), (D)-(II) |
(A)-(II), (B)-(I), (C)-(IV), (D)-(III) |
The correct answer is Option (3) → (A)-(II), (B)-(I), (C)-(IV), (D)-(III)
The Breakdown (A) Kolbe's Reaction → (II) Preparation of Salicylic acid In this reaction, phenol is treated with sodium hydroxide and then carbon dioxide ($CO_2$) under pressure, followed by acidification to produce salicylic acid (a key step in making aspirin).
(B) Williamson synthesis → (I) Preparation of symmetrical and unsymmetrical ethers This is an $S_N2$ reaction where an organohalide reacts with a deprotonated alcohol (alkoxide) to form an ether. It is the go-to method for creating ethers with different or identical R-groups. (C) Lucas test→ (IV) Distinction between different types of alcohols The Lucas reagent (anhydrous $ZnCl_2$ and conc. $HCl$) is used to tell primary, secondary. and tertiary alcohols apart based on how quickly the solution turns turbid.
(D) Grignard's reagent → (III) Organo-Magnesium halide A Grignard reagent has the general formula $R-Mg-X$, where $R$. is an alkyl or aryl group and $X$ is a halogen. It is a fundamental tool for forming new carbon-carbon bonds. |
