Hydrolysis of sucrose with dilute aqueous sulphuric acid yields:

1 : 1 o f D - (+) -

glucose;

D - (-) -

fructose

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1 : 2 o f D - (+) -

glucose;

D - (-) -

fructose

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1 : 1 o f D - (-) -

glucose;

L - (+) -

fructose

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1 : 2 o f D - (-) -

glucose;

D - (+) -

fructose

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Solution

The correct option is A $1 : 1 o f D - (+) -$ glucose; $D - (-) -$ fructose
On hydrolysis with dilute aqueous sulphuric acid, sucrose gives a equimolar mixture of $D - (+)$ glucose and $D - (-) -$ fructose.
$\begin{matrix} C_{12} H_{22} O_{11} s u c r o s e \end{matrix} + H_{2} O H_{2} S O_{4} - -------- \to \begin{matrix} C_{6} H_{12} O_{6} D - (+) g l u c o s e 1 \end{matrix} + \begin{matrix} C_{6} H_{12} O_{6} D - (-) f r u c t o s e 1 \end{matrix}$
Sucrose is dextrorotatory but after hydrolysis gives dextrorotatory glucose and laevorotatory fructose.

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Similar questions

Sucrose (can Sugaro) is a disaccharide. One molecule of sucrose on hydrolysis gives............ .
(a) 2 molecules of glucose
(b) 2 molecules of glucose + 1 molecule of fructose
(c) 1 molecule of clucose + 1 molecule of fructose
(d) 2 molecules of fructose

Q. (+)-Sucrose has a specific rotation of +66.5, while D-(+)-glucose and D-(-)-fructose have specific rotations of +52.5 and -92.4 respectively. After complete hydrolysis of (+)-sucrose by dilute acid, the specific rotation of the hydrolysis product, called invert sugar [a 1 : 1 mixture of D-(+)-glucose and D-(-)-fructose] is

- x

.
the nearest integer value of

x

is:

Q. (+)-Sucrose has a specific rotation of +66.5, while D-(+)-glucose and D-(-)-fructose have specific rotations of +52.5 and -92.4 respectively. After complete hydrolysis of (+)-sucrose by dilute acid, what will be the specific rotation of the hydrolysis product, called invert sugar [a 1 : 1 mixture of D-(+)-glucose and D-(-)-fructose] ?

The statement 'Sucrose has

C_{1} - C_{2}

glycosidic linkage between

β

-D-Glucose &

α

-D-Fructose' is

$G l u c o s e$ $+ C H_{3} O H H C l (g) \to$	(1)Mannose
$S u c r o s e$ $+ H_{3} O^{+} \to$	(2) Galactose
$F r u c t o s e$ $B a s e \to$	(3) Glucose
$L a c t o s e$ $+ H_{3} O^{+} \to$	(4) Fructose
	(5) Glucoside

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