See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

2 2 2 3 3 2 Smallest K Largest K O Cl O Cl O O || | || | || || CH CH CH C H CH CH CH C HCH CH CF CH    27. In acidic medium nucleophilicity of enol decide the rate of reaction, but in basic medium stability of enolate decide the rate of reaction. 28. (A) not reducing: an acetal ending in “oside” (B) reducing: a hemiacetal ending in ose (C) reducing: one of ring has a hemiacetal (D) not reducing: all anomeric carbons are in acetal form