Q. 54.0( 1 Vote )

What is the basic

Answer :

Sucrose on breaking gives two molecules with same molecular formula but different structures: Glucose and fructose, where are both monosaccharide sugars.


Glucose is an aldehyde and whereas fructose is a ketone and has following structure according to Fischer projections.



Another difference is the number of chiral carbons in glucose is 4 whereas in fructose is 3. Also the number of 2° alcohol is 4 for glucose and 3 for fructose.


OR


Write the products obtained after hydrolysis of lactose.


Hydrolysis of lactose gives mixture of two compounds D-galactose and D-glucose. The reaction is as follows:



NOTE: the cyclic structures shown by Haworth projection are given as follows:



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