A) D-glucose + D-glucose
B) D-glucose + D-galactose
C) D-glucose + D-fructose
D) D-galactose + D-fructose
Correct Answer: B
Solution :
Lactose is hydrolysed with dilute acid or by the lactase enzyme into D-glucose and D-galactose. \[\underset{lactose}{\mathop{{{C}_{12}}{{H}_{22}}{{O}_{11}}}}\,+{{H}_{2}}O\xrightarrow{dil.\,acid}\underset{glu\cos e}{\mathop{{{C}_{6}}{{H}_{12}}{{O}_{6}}}}\,+\underset{galactose}{\mathop{{{C}_{6}}{{H}_{12}}Ol6}}\,\]
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