Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-31

  • question_answer
    White phosphorus is always kept under

    A)  benzene           

    B)  kerosene

    C)  ether               

    D)  water

    Correct Answer: D

    Solution :

    White phosphorus catches fire when exposed to air and burns to form oxide \[{{P}_{4}}{{O}_{10}}.\] Hence, it is stored under water to prevent it from burnig. \[{{P}_{4}}+5{{O}_{2}}\to {{P}_{4}}{{O}_{10}}\]


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