Question:
Which of the following reactions of glucose can be explained only by its cyclic
structure?
(i) Glucose forms pentaacetate.
(ii) Glucose reacts with hydroxylamine to form an oxime.
(iii) Pentaacetate of glucose does not react with hydroxylamine.
(iv) Glucose is oxidised by nitric acid to gluconic acid.
Solution:
Option (iii) Pentaacetate of glucose does not react with hydroxylamine is the answer.