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Biomolecules Test - 1

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Biomolecules Test - 1
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Weekly Quiz Competition
  • Question 1
    1 / -0

    Gun-cotton is

    Solution

    Gun-cotton is a nitrocellulose or cellulose trinitrate which is used in explosive and as a binder for solid rocket propellant.

     

  • Question 2
    1 / -0

    Which of the following monosaccharide is a pentose

    Solution

    Arabinose is an aldopentose HOCH2 - (CHOH)3 - CHO

     

  • Question 3
    1 / -0

    Which of the following is a carbohydrate

    Solution

    Inulin is a carbohydrate which is stored in “Roots of Dahliya”.

     

  • Question 4
    1 / -0

    General formula for carbohydrates is

    Solution

    Carbohydrates are hydrates of carbon. Their general formula is Cx(H2O)y.

     

  • Question 5
    1 / -0

    Glucose gives silver mirror with Tollen's reagent. It shows the presence of

    Solution

    Glucose + Tollen’s reagent →
                                                   Gluconic acid + Ag-mirror.

     

  • Question 6
    1 / -0

    A certain compound gives negative test with ninhydrin and positive test with Benedict's solution. The compound is

    Solution

    Protein gives blue-violet colour with ninhydrin

                                               (2, 2-dihydroxyindane-1, 3-diene)

    Carbohydrates gives brown red ppt. with benedict’s solution (Alk. CuSO4 + Citrate ions)

     

  • Question 7
    1 / -0

    Sugar can be tested in urine by

    Solution

    Glucose + Benedict's solution → Red colour (Cu2O).

     

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