Question

Sucrose in water is dextro-rotatory, [a]_D = + 66.4º. When boiled with dilute HCl, the solution becomes leavo-rotatory, [a]_D = –20º. In this process the sucrose molecule breaks into

(a) L-glucose + D-fructose 

(b) L-glucose + L-fructose 

(c) D-glucose + D-fructose 

(d) D-glucose + L-fructose

Answer 1

Correct option: (c) D-glucose + D-fructose

Explanation:

The hydrolysis of sucrose by boiling with mineral acid or by enzyme invertase or sucrase produces a mixture of equal molecules of D(+) glucose and D(–) Fructose.