PYQ Vault

Polysaccharides: starch, amylose, cellulose and glycogen

This type of question, asked 5 times: 14 Jun 2022, 26 Jul 2022, 29 Jul 2022, 29 Jan 2024, 29 Jan 2025. All 5 questions below, oldest first.

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  1. Question 1

    14 Jun 2022

    48
    A polysaccharide 'XX' on boiling with dil H2SO4H_{2}SO_{4} at 393 K393\text{ }K under 2-3 atm pressure yields 'YY'. 'YY' on treatment with bromine water gives gluconic acid. 'XX' contains β\beta-glycosidic linkages only. Compound 'XX' is:

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  2. Question 2

    26 Jul 2022

    139
    Animal starch is the other name of:

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  3. Question 3

    29 Jul 2022

    139
    Given below are two statements. One is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Amylose is insoluble in water. Reason R: Amylose is a long linear molecule with more than 200 glucose units. In the light of the above statements, choose the correct answer from the options given below.

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  4. Question 4

    29 Jan 2024

    122
    Match List I with List II
    List I (Biopolymer)List II (Monomer)
    A.StarchI.nucleotide
    B.CelluloseII.α\alpha-glucose
    C.Nucleic acidIII.β\beta-glucose
    D.ProteinIV.α\alpha-amino acid
    Choose the correct answer from the options given below.

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  5. Question 5

    29 Jan 2025

    43
    Match List-I with List-II.
    List-I (Carbohydrate)List-II (Linkage, Source)
    (A)Amylose(I)β−C1−C4\beta-C_{1}-C_{4}, plant
    (B)Cellulose(II)α−C1−C4\alpha-C_{1}-C_{4}, animal
    (C)Glycogen(III)α−C1−C4\alpha-C_{1}-C_{4}, α−C1−C6\alpha-C_{1}-C_{6}, plant
    (D)Amylopectin(IV)α−C1−C4\alpha-C_{1}-C_{4}, plant
    Choose the correct answer from the options given below:

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