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Standard XII
Biology
Polysaccharides
An example of...
Question
An example of a diaccharide made up of two units of the same monosaccharides is
A
Sucrose
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B
Maltose
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C
Lactose
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D
None of these
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Solution
The correct option is
B
Maltose
Hydrolysis of sucrose gives equimolar mixture of glucose and fructose.
Hydrolysis of maltose gives two monomers of glucose.
C
12
H
22
O
11
Hydrolysis
−
−−−−−
→
C
6
H
12
O
6
+
C
6
H
12
O
6
Maltose
α
−
D
−
Glucose
α
−
D
−
Glucose
Lactose produces glucose and galactose on hydrolysis.
Hence, (b) is correct.
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