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    Which law is shown by fixed 1:8 mass ratio in water formation?
    Question

    Which law is shown by fixed 1:8 mass ratio in water formation?

    A.

    Law of Multiple Proportions

    B.

    Law of Constant Proportions

    C.

    Dalton’s Atomic Theory

    D.

    Law of Conservation of Energy

    Correct option is B

    The correct answer is (b) Law of Constant Proportions
    Explanation:
    . Same compound has fixed composition.
    . Proposed by Joseph Proust.
    . Independent of source.
    . Water always 1:8 by mass.
    . Fundamental chemical law.
    Information Booster:
    . Also called Law of Definite Proportions.
    . Validates atomic theory.

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