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KVPY Sample Paper KVPY Stream-SX Model Paper-20

  • question_answer
    Among the following, the number of compounds than can react with \[PC{{l}_{5}}\] to give \[POC{{l}_{3}}\]is   \[{{O}_{2}},S{{O}_{2}},{{H}_{2}}O,{{H}_{2}}S{{O}_{4}},{{P}_{4}}{{O}_{10}}\]

    A) 1

    B) 5

    C) 4

    D) 2

    Correct Answer: C

    Solution :

    \[PC{{l}_{5}}+S{{O}_{2}}\xrightarrow{{}}POC{{l}_{3}}+SOC{{l}_{2}}\]
    \[PC{{l}_{5}}+{{H}_{2}}O\xrightarrow{{}}POC{{l}_{3}}+2HCl\]
    \[PC{{l}_{5}}+{{H}_{2}}S{{O}_{4}}\xrightarrow{{}}POC{{l}_{3}}+S{{O}_{2}}Cl+2HCl\]
    \[6PC{{l}_{5}}+{{P}_{4}}{{O}_{10}}\xrightarrow{{}}10POC{{l}_{3}}\]
    Hence, there are four compounds which among the given compounds which gives \[POC{{l}_{3}}\] on reaction \[PC{{l}_{5}}\].


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