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Question

Chemistry Question on Biomolecules

Disaccharide in milk is

A

sucrose

B

maltose

C

cellulose

D

lactose

Answer

lactose

Explanation

Solution

Disaccharide in milk is lactose (C12H22011).(C_{12} H_{22} 0_{11} ). It gives glucose and galactose on hydrolysis.

     C12H22O11lactose+H2O →H+  C6H12O6glucose+C6H12O6galactose\, \, \, \, \, \underset {lactose}{C_{12} H_{22} O_{11}} + H_2 O \, \xrightarrow {H^+} \, \, \underset {glucose}{C_6 H_{12} O_6 } + \underset {galactose}{C_6 H_{12} O_6}