Solved papers for NEET Chemistry NEET PYQ-Boron Family

done NEET PYQ-Boron Family Total Questions - 12

  • question_answer1) Purification of aluminium, by electrolyte refining, is known as:                                [AIPMT 1999]

    A)
    Hall's process

    B)
    Baeyer's process

    C)
    Hoope's process

    D)
    Serpeck's process

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  • question_answer2) In borax bead test which compound is formed? [AIPMT 2002]

    A)
    ortho borate

    B)
    meta borate

    C)
    double oxide

    D)
    terra borate

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  • question_answer3) Which one of the following compounds is not a protonic acid?                                 [AIPMT 2003]

    A)
    \[SO{{(OH)}_{2}}\]

    B)
    \[S{{O}_{2}}{{(OH)}_{2}}\]

    C)
    \[B{{(OH)}_{2}}\]

    D)
    \[PO{{(OH)}_{3}}\]

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  • question_answer4) \[A{{l}_{2}}{{O}_{3}}\] can be converted to anhydrous \[AlC{{l}_{3}}\] by heating:                     [AIPMT (S) 2006]

    A)
    \[A{{l}_{2}}{{O}_{3}}\] with HCl gas

    B)
    \[A{{l}_{2}}{{O}_{3}}\] with \[NaCl\] in solid state

    C)
    a mixture of \[A{{l}_{2}}{{O}_{3}}\] and carbon in dry \[C{{l}_{2}}\] gas

    D)
    \[A{{l}_{2}}{{O}_{3}}\] with \[C{{l}_{2}}\] gas

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  • question_answer5) Which of the following is the most basic oxide?                                    [AIPMT (S) 2006]

    A)
    \[A{{l}_{2}}{{O}_{3}}\]

    B)
    \[S{{b}_{2}}{{O}_{3}}\]

    C)
    \[B{{i}_{2}}{{O}_{3}}\]

    D)
    \[Se{{O}_{2}}\]                   

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  • question_answer6) The stability of +1 oxidation state increases in the sequence                  [AIPMT (S) 2009]

    A)
    \[Al<Ga<In<Tl\]

    B)
    \[Tl<In<Ga<Al\]

    C)
    \[In<Tl<Ga<Al\]

    D)
    \[Ga<In<Al<Tl\]

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  • question_answer7) The tendency of \[B{{F}_{3}},\text{ }BC{{l}_{3}}\] and \[BB{{r}_{3}}\] to behave as Lewis acid decreases in the sequence  [AIPMT (S) 2010]

    A)
    \[BC{{l}_{3}}>B{{F}_{3}}BB{{r}_{3}}\]

    B)
    \[BB{{r}_{3}}>BC{{l}_{3}}>B{{F}_{3}}\]

    C)
    \[BB{{r}_{3}}>B{{F}_{3}}>BC{{l}_{3}}\]

    D)
    \[B{{F}_{3}}>BC{{l}_{3}}>BB{{r}_{3}}\]

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  • question_answer8) Aluminium is extracted from alumina \[(A{{l}_{2}}{{O}_{3}})\] by electrolysis of a molten mixture of [AIPMT (S) 2012]

    A)
    \[A{{l}_{2}}{{O}_{3}}+HF+NaAl{{F}_{4}}\]

    B)
    \[A{{l}_{2}}{{O}_{3}}+Ca{{F}_{2}}+NaAl{{F}_{4}}\]

    C)
     \[A{{l}_{2}}{{O}_{3}}+N{{a}_{3}}Al{{F}_{6}}+Ca{{F}_{2}}\]

    D)
    \[A{{l}_{2}}{{O}_{3}}+KF+N{{a}_{3}}Al{{F}_{6}}\]

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  • question_answer9) Which of the following structure is similar to graphite?                                   [NEET 2013]

    A)
    BN

    B)
    B

    C)
    \[{{B}_{4}}C\]

    D)
    \[{{B}_{2}}{{H}_{6}}\]

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  • question_answer10) The stability of +1 oxidation state among Al,                                     [NEET 2015 (Re)] Ga, In and Tl increases in the sequence

    A)
    \[Ga<\ln <Al<Tl\]

    B)
    \[Al<Ga<\ln <Tl\]

    C)
                                                                 

    D)

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  • question_answer11) Which one of the following elements is unable to form \[\text{MF}_{\text{6}}^{\text{3-}}\text{ion}\]? [NEET - 2018]

    A)
    B

    B)
    Al

    C)
    Ga

    D)
    In

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  • question_answer12) The correct order of atomic radii in group 13 elements is                           [NEET - 2018]

    A)
    \[\text{BGaAlTlIn}\]   

    B)
    \[\text{BAlGaInTl}\]

    C)
    \[\text{BAlInGaTl}\]

    D)
    \[\text{BGaAlInTl}\]

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NEET PYQ-Boron Family
 

   


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