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  1. A semi-conductor is damaged & behaves like a conductor, on passing a strong electric current through it, because it heats up the crystals & breaks the covalant bonds resulting in __________ electrons.

    2. A.
    lack of free
    B.
    excess of
    C.
    decrease in
    D.
    none of these

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    Answer : Option B

    Explanation :

    No answer description available for this question.

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