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NEETChemistryAmines & BiomoleculesClass 12

What does “Reducing vs non-reducing sugars” actually mean in Amines & Biomolecules, and why does it matter for NEET?

sugars with a free aldehyde/ketone group (glucose, fructose, maltose) reduce Tollens'/Fehling's; sucrose does not.

In simple words: sugars with a free aldehyde/ketone group (glucose, fructose, maltose) reduce Tollens'/Fehling's; sucrose does not. Getting Reducing vs non-reducing sugars clear matters because NEET questions on Amines & Biomolecules usually test this idea directly, not just a formula you memorised.

Key point

Reducing vs non-reducing sugars

Common mistake

assuming every sugar is a reducing sugar.

Memory tip

sucrose locks up both reactive groups → non-reducing.

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