Question

How do you explain the presence of an aldehyde group in glucose molecule

Answer 1

Glucose molecule acts as a reducing sugar due to the presence of CHO group... This can be verified by any of the test used for detection of aldehydes

Answer 2

$\huge\rm{Answer :-}$

The pentaacetate of glucose does not react with hydroxylamine ($NH_2OH$) which shows that aldehyde(—CHO) group is present in glucose pentaacetate.

Hence, the answer is verified.