KVPY Sample Paper KVPY Stream-SX Model Paper-28

  • question_answer
    Which of the following process are associated with the change of hybridization of the under lined compound?
    [a] Al (OH) ppt. dissolved in NaOH
    [b] \[{{B}_{2}}{{H}_{6}}\] is dissolved in THF
    [c] \[Si{{F}_{4}}\] vapour is passed through liq. HF
    [d] Solidification of \[PC{{l}_{5}}\] vapour

    A) a, b, c

    B) a, b, d

    C) a, c, d

    D) only d

    Correct Answer: D

    Solution :

    \[A\ell {{(OH)}_{3}}+NaOH\to Na[A\ell {{(OH)}_{4}}]\]
    \[Si{{F}_{4}}+2HF\xrightarrow{{}}{{H}_{2}}Si{{F}_{6}}\]


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