Published by:
CGP EDU Academic Team
Published on: August 11, 2026
Which of the given statement is incorrect about glucose?
A
Glucose exists in two crystalline forms 
and 
and B
Glucose gives Schiff's test for aldehyde.
C
Glucose reacts with hydroxylamine to form oxime.
D
The pentaacetate of glucose does not react with hydroxylamine to give oxime.
Text Solution
Verified by ExpertsThe correct answer is:
B
1.Pentaacetate of glucose exists in cyclic form
Do not react with hydroxylamine as there is no Aldehyde group. [Ref. image
(i)]
Option is correct statement.
2. Glucose exists in two crystalline forms 
and 
option correct statement
3. Option correct. [Ref. image (3)]
4. Schiff's test is done in a basic medium where glucose is in cyclic form. therefore no aldehyde group. So it cant give Schiff's test option is an incorrect statement.
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