JEE Main & Advanced Chemistry The p-block Elements-II / p-ब्लॉक तत्व-II Question Bank Self Evaluation Test - The p-Block Elements (Group 15, 16, 17 & 18)

  • question_answer
    \[A+{{H}_{2}}O\xrightarrow{{}}B+HCl\]    \[B+{{H}_{2}}O\xrightarrow{{}}C+HCl\] Compound (A), (B) and (C) will be respectively:

    A) \[PC{{l}_{5}},POC{{l}_{3}},{{H}_{3}}P{{O}_{3}}\]

    B) \[PC{{l}_{5}},POC{{l}_{3}},{{H}_{3}}P{{O}_{4}}\]

    C) \[SOC{{l}_{2}},POC{{l}_{3}},{{H}_{3}}P{{O}_{3}}\]

    D) \[PC{{l}_{3}},POC{{l}_{3}},{{H}_{3}}P{{O}_{4}}\]

    Correct Answer: B

    Solution :

    [b] \[\underset{A}{\mathop{PC{{l}_{5}}}}\,+{{H}_{2}}O\xrightarrow{{}}\underset{B}{\mathop{POC{{l}_{3}}}}\,+2HCl\] \[\underset{(B)}{\mathop{POC{{l}_{3}}}}\,+3{{H}_{2}}O\xrightarrow{{}}\underset{(C)}{\mathop{{{H}_{3}}P{{O}_{4}}}}\,+3HCl\]


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