A) only in open chain form
B) only in pyranose form
C) only in furanose form
D) in all three forms in equilibrium
Correct Answer: B
Solution :
In aqueous solution, the aldohexoses like glucose exist predominantly in pyranose form. Remember! In aqueous solution, glucose consists of about 0.003% aldehyde, and a trace of hydrate; the rest, more than 99.99% is cyclic hemiacetols. Note Ketohexose like fructose exist in furanose form.You need to login to perform this action.
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