JEE PYQ: Biomolecules And Polymers Question 31
Question 31 - 2020 (08 Jan Shift 1)
Which of the following statement is not true for glucose?
(1) Glucose exists in two crystalline forms $\alpha$ and $\beta$
(2) Glucose gives Schiff’s test for aldehyde
(3) Glucose reacts with hydroxylamine to form oxime
(4) The pentaacetate of glucose does not react with hydroxylamine to give oxime
Show Answer
Answer: (2)
Solution
Glucose exists in cyclic form in which aldehyde group is not free, therefore it does not give Schiff’s test.