Uttarakhand PMT Uttarakhand PMT Solved Paper-2010

  • question_answer
    During roasting of zinc blende, it converts to

    A)  \[ZnO\]           

    B)  \[ZnS{{O}_{4}}\]

    C)  \[ZnC{{O}_{3}}\]         

    D)  \[Zn\]

    Correct Answer: A

    Solution :

     Zinc blende is converted into zinc oxide in the presence of excess of air at about 1200 K. This process is called roasting. \[\underset{zinc\text{ }blende}{\mathop{2ZnS}}\,+3{{O}_{2}}\xrightarrow[{}]{{}}\underset{zinc\text{ }oxide}{\mathop{2ZnO}}\,+2S{{O}_{2}}\]


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