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Chemistry · 2026 · 3 marks
CBSE 2026 · Region 1 · Set 2 · Q25
Define the following terms: (a) Anomers (b) Invert sugar (c) Glycosidic linkage
Define the following terms :
(a)
Anomers
(b)
Invert sugar
(c)
Glycosidic linkage
Marking-scheme solution
(a)
Isomers which differ in the configuration of -OH at C-$\displaystyle 1$ or C-$\displaystyle 2$ of
monosaccharides.
(b)
Sucrose is dextrorotatory and its hydrolysis gives dextrorotatory glucose
and laevorotatory fructose where laevo rotation is more than dextro
rotation resulting in net rotation as laevorotatory, the product is known as
invert sugar .
(c)
Glycosidic linkage in which two or more monosaccharides are joined
together by an oxygen atom.
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CBSE Class 12 Chemistry past-paper question from the 2026 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.