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NEET Sample Paper NEET Sample Test Paper-2

  • question_answer
    Which method of purification is represented by the following equations? \[Ti+2{{I}_{2}}\xrightarrow{773K}Ti{{I}_{4}}\xrightarrow{1675\,K}Ti+2{{I}_{2}}\]

    A)  Cupellation       

    B)  Polling

    C)  Van arkel         

    D)  Zone refining

    Correct Answer: C

    Solution :

    In Van-Arkel method, the metal is converted into its stable volatile iodide which is then decomposed at higher temperature to pure metal and \[{{I}_{2}}\]. \[Ti+2{{I}_{2}}\xrightarrow{773K}Ti{{I}_{4}}\xrightarrow{1675\,K}Ti+2{{I}_{2}}\]


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