AIIMS AIIMS Solved Paper-2004

  • question_answer

    Direction for: In each of the following questions a statement of Assertion is given followed by a corresponding statement of Reason just below it. Of the statements mark the correct answer as

    Assertion: All  \[NaOH-{{I}_{2}}\] angle in \[KOH\] is greater than \[C{{H}_{2}}=CHBr\] but less than \[C{{H}_{3}}COC{{H}_{2}}C{{H}_{2}}Br\]. Reason: The lone pair-bond pair repulsion is weaker than bond pair-bond pair repulsion.

    A) If both assertion and reason are true and reason is not the correct explanation of assertion.

    B) If both assertion and reason are true but reason is not the correct explanation of assertion.

    C) If assertion is true but reason is false.

    D) If both assertion and reason are false.

    Correct Answer: D

    Solution :

    \[S{{F}_{4}}\] has see-saw type structure in which bond angles are different between different \[S-F\] atoms. It has non-planar structure. According to VSEPR theory lone pair-lone pair repulsion > lone pair-bond pair repulsion > bond pair-bond pair repulsion.


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