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NTSE Sample Paper NTSE SAT Practice Test-6

  • question_answer
    An element A is soft and can be cut with a knife. This is very reactive to air and cannot be kept in air. It reacts vigorously with water. Identify the element from the following:

    A) Mg                   

    B)        Na

    C) P                     

    D)        Ca

    Correct Answer: B

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