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    Which of the following is the non-crystalline solid?
    Question

    Which of the following is the non-crystalline solid?

    A.

    Rubber

    B.

    Lead iodide

    C.

    Zinc sulphide

    D.

    Mercury sulphide

    Correct option is A


    Rubber is an example of an amorphous (non-crystalline) solid, meaning its molecules are not arranged in a definite, repeating pattern like crystalline solids.

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