Question

Which of the following reactions of glucose can be explained only by its cyclic structure?

• A. Glucose forms pentaacetate.
• B. Glucose reacts with hydroxylamine to form and oxime.
• C. Pentaacetate of glucose does not reacts with hydroxylamine.
• D. Glucose is oxidized by nitric acid to gluconic acid.

Answer 1

Answer: (C)

Pentaacetate of glucose does not reacts with

hydroxylamine.

Answer 2

Pentaacetate of glucose does not react with $NH_{2}OH$indicating absence of –CHO group