NEET Sample Paper NEET Sample Test Paper-4

  • question_answer
    Mercury sticks to the surface of the glass when it comes in contact with

    A)  \[{{H}_{2}}O\]                       

    B)  \[HN{{O}_{3}}\]

    C)  \[{{O}_{3}}\]                       

    D)  Grease

    Correct Answer: C

    Solution :

    \[2{{H}_{g}}+{{O}_{3}}\xrightarrow{{}}H{{g}_{2}}O+{{O}_{2}}\] Mercurous oxide dissolves in mercury which loses its meniscus and sticks to the glass (tailing of mercury).


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