Enumerate the reactions of glucose which cannot be explained by its open chain structures. (2 marks)
Limitations of the open chain structure of glucose :
(i) Glucose does not form addition product. Despite having aldehyde-ammonia group, it
does not give 2, 4-DNP test and does not respond to Schiff's reagent test.
(ii) Glucose penta acetate does not react with due to absence of aldehydic group.