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  3. 11th Class
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11th Class Chemistry Sample Paper Chemistry Sample Paper-5

  • question_answer
    Aluminothermy, used for the spot welding of large iron structures is based on which fact?

    A)  Reaction between Fe and oxygen is endothermic.

    B)  As compared to Al, Fe has greater affinity for oxygen.

    C)  As compared to Fe, Al has greater affinity for oxygen.

    D)  Reaction between Al and oxygen is endothermic.

    Correct Answer: C

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