Which component of starch is a branched polymer of -glucose and insoluble in water-

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Standard XII

Chemistry

Starch

Which compone...

Question

Which component of starch is a branched polymer of $α$ -glucose and insoluble in water?

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Solution

Starch has two fractions, water soluble amylose and water insoluble amylopectin
Amylose is unbranched polymer and amylopectin is branched chain polymer.
Starch has 20% amylose and 80% amylopectin.

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Q. Assertion :Starch is a polymer of glucose. Reason: Starch is a reserve food of plants and has two components (i) amylose- a branched polymer of glucose (ii) amylopectin- an unbranched polymer of glucose.

Q. Water insoluble component of starch is:

Plants cannot store glucose as it is, but store in the form of starch because glucose is insoluble in water.

Glycogen is a branched chain polymer of $α - D$ glucose units in which chain is formed by C1-C4 glycosidic linkage whereas branching occurs by the formation of C1-C6 glycosidic linkage. Structure of glycogen is similar to .............. .
(a) amylose (b) amylopectin (c) cellulose (d) glucose

Which of the following carbohydrates are branched polymer of glucose?

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Which component of starch is a branched polymer of α-glucose and insoluble in water?

Starch has two fractions, water soluble amylose and water insoluble amylopectin Amylose is unbranched polymer and amylopectin is branched chain polymer.Starch has 20% amylose and 80% amylopectin.

Which component of starch is a branched polymer of $α$ -glucose and insoluble in water?

Starch has two fractions, water soluble amylose and water insoluble amylopectin
Amylose is unbranched polymer and amylopectin is branched chain polymer.
Starch has 20% amylose and 80% amylopectin.