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    3.

    Name the elements, which occur in nucleic acid macromolecule?

    A

    Carbon, Hydrogen, Oxygen, Nitrogen, and Phosphorus

    B

    Carbon, Hydrogen, Oxygen, Sulfur, and Phosphorus

    C

    Carbon, Hydrogen, Oxygen, Nitrogen, and Potassium

    D

    Carbon, Hydrogen, Sulfur, Nitrogen, and Phosphorus

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    10.

    An essential element is that which

    A

    Improves health of the plant

    B

    Is irreplaceable and indispensable for growth of plants

    C

    Is found in plant ash

    D

    Is available in the soil

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