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NTSE Sample Paper NTSE SAT Practice Test-13

  • question_answer
    Test tube 'A' contains normal water with iron nails, test tube 'B' contains boiled and distilled water layer of oil over and iron nails, and test tube 'C' contain anhydrous calcium chloride. In which of the following test tubes the iron nails get rusted ?

    A) A          

    B) B

    C) C              

    D) In all test tubes

    Correct Answer: A

    Solution :

    [a] For rusting air and water are required.   


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