Ncert Exercises & Solutions

Which of the following monosaccharides are present as have membered
cyclic structure (furanose structure)?

1. Ribose

2. Glucose

3. fructose

4. Galactose

(a, c)
Ribose and fructose have five-membered cyclic furanose structure because it includes 5 carbon atom containing polyhydroxy carbonyl compound.
Hence (a) and (c) are the correct choice.

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