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Which of the following reactions of gluc...

Which of the following reactions of glucose can be explained only by its cyclic structure ?

A

Glucose forms pentaacetate

B

Glucose reacts with hydroxylamine to form an oxime

C

Pentaacetate of glucose does not react with hydroxylamine

D

Glucose is oxidised by nitric acid to gluconic acid.

Text Solution

Verified by Experts

The correct Answer is:
C
Due to absence of free OH group at `C_1` cyclic structure of glucose pentaacetate cannot revert to open chain structure and hence cannot for an oxime.
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ICSE-BIOMOLECULES-EXERCISE (PART-I)(OBJECTIVE QUESTIONS)(THE CORRECT ALTERNATIVE FROM THE CHOICES GIVEN : )
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  2. Which of the following pairs represents anomers ?

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  3. Proteins are found to have two different types of secondary structures...

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  4. In disaccharides , if the reducing groups of monosaccharides i.e. alde...

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  5. Which of the following acids is a vitamin ?

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  6. Dinucleotide is obtained by joining two nucleotides together by phosph...

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  7. Nucleic acids are the polymers of .

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  8. Which of the following statement is not true about glucose?

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  9. Each polypeptide in a protein has amino acids linked with each other i...

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  10. DNA and RNA contain four bases each. Which of the following bases in n...

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  11. Which of the following B-group vitamins can be stored in our body ?

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  12. Which one of the following bases is not present in DNA ?

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  13. These cyclic structures of monosaccharides are given below which of th...

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  14. Which of the following reactions of glucose can be explained only by i...

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  15. Optical rotations of some compounds along with their structures are gi...

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  16. Structure of disaccharide formed by glucose and fructose is given belo...

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  17. Three structures are given below in which two glucose units are linked...

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  18. Sucrose is a

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  19. The pair of sugars which give the same product with excess phenylhydra...

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  20. Glucose on treatment with NH2 OH undergoes

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