Question

Which of the following statements is not true about glucose?
A. It is an aldohexose
B. On heating with HI it forms n-hexane
C. It is present in furanose form
D. It does not give 2,4-DNP test

Answer 1

Correct Answer - C
Glucose is a aldohexose having structural formula.

Glucose on heating with HI produces n hexane.
`C_(6)H_(12)O_(6) overset(HI)rarr C_(6)H_(14)`.
Glucose does not give 2,4. DNP test due to its existence as cyclic structure shown below

It is present in pyranose form, as shown belo

Pyranose means pyran (membered ring containing oxygen) like structure.