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Question

Inulin is a polymer of:


A

(a) Glucose

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B

(b) Fructose

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C

(c) Galactose

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D

(d) Arabinose

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Solution

The correct option is B

(b) Fructose


Explanation for correct option:

Option (B) Fructose

  • Fructose, often known as fruit sugar, is a ketonic simple sugar present in many plants.
  • It is frequently linked to glucose to produce the disaccharide sucrose.
  • Inulin is a fructose polymer found in many plants.
  • It is found in the roots and rhizomes of plants. Inulinase is produced by hydrolysis of inulin.

Explanation for incorrect options:

Option (A) Glucose:

Glucose has a chemical formula C6H12O6 and is a simple sugar.

Option (C) Galactose:

  • The most frequent monosaccharide is glucose, but galactose is more typically found in the disaccharide, lactose, or milk sugar.
  • It is found in peas as a monosaccharide.
  • Galactose is a glucose isomer.
  • They simply differ in the arrangement of their atoms.
  • Glucose and galactose are stereoisomers.

Option (D) Arabinose:

Arabinose is an aldopentose, which is a monosaccharide with five carbon atoms and an aldehyde (CHO) functional group.

Thus, option (B) is correct. Inulin is a polymer of Fructose.


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