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KVPY Sample Paper KVPY Stream-SX Model Paper-27

  • question_answer
    \[PbS\xrightarrow[\Delta ]{air}X,\] \[X+PbS\xrightarrow{{}}pB+S{{O}_{2}}\]

    A) PbO

    B) \[Pb{{O}_{2}}\]

    C) PbO and \[PbS{{O}_{4}}\]

    D) \[Pb{{O}_{2}}\] and PbO

    Correct Answer: C

    Solution :

    \[PbS+{{O}_{2}}\xrightarrow{{}}PbO+S{{O}_{2}}\] \[PbS+2{{O}_{2}}\xrightarrow{{}}PbS{{O}_{4}}\]


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