JEE Main 2017 (2 Apr, offline) Chemistry Q57: Carbohydrates

Question

Which of the following compounds will behave as a reducing sugar in an aqueous KOH solution ?

Accepted Answer

Option 3: [structure: furanose ring with $\mathrm{HOH_2C}$, ring O, $\mathrm{CH_2OH}$ and anomeric carbon bearing $\mathrm{OCOCH_3}$ (acetate), plus HO and OH]

Answer

[structure: furanose ring with $\mathrm{HOH_2C}$, ring O, $\mathrm{CH_2OH}$ and anomeric carbon bearing $\mathrm{OCH_3}$ (methyl glycoside), plus HO and OH]

Answer

[structure: pyranose ring with $\mathrm{HOH_2C}$..., ring O, $\mathrm{CH_2OCH_3}$, with OH groups]

Answer

[structure: furanose ring with $\mathrm{HOH_2C}$, ring O, $\mathrm{CH_2OH}$ and anomeric carbon bearing $\mathrm{OCOCH_3}$ (acetate), plus HO and OH]

Answer

[structure: furanose ring with $\mathrm{HOH_2C}$, ring O, $\mathrm{CH_2OH}$, anomeric carbon bearing free HO, plus OH]

JEE Main 2 April 2017 (offline), Chemistry Q57

Same idea in other shifts