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NTSE Sample Paper NTSE SAT Practice Test-20

  • question_answer
    When the head of matchstick strikes against the side of matchbox, the combustion starts

    A) From potassium chlorate

    B) With the conversion of red phosphorous into white phosphorous

    C) From antimony trisulphide

    D) None of these

    Correct Answer: B

    Solution :

    [b] Red phosphorous catches fire easily


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