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
  done clear
  B)
  Baeyer's process
  done clear
  C)
  Hoope's process
  done clear
  D)
  Serpeck's process
  done clear
  View Answer play_arrow

• question_answer2) In borax bead test which compound is formed? [AIPMT 2002]
  A)
  ortho borate
  done clear
  B)
  meta borate
  done clear
  C)
  double oxide
  done clear
  D)
  terra borate
  done clear
  View Answer play_arrow

• question_answer3) Which one of the following compounds is not a protonic acid?                                 [AIPMT 2003]
  A)
  \[SO{{(OH)}_{2}}\]
  done clear
  B)
  \[S{{O}_{2}}{{(OH)}_{2}}\]
  done clear
  C)
  \[B{{(OH)}_{2}}\]
  done clear
  D)
  \[PO{{(OH)}_{3}}\]
  done clear
  View Answer play_arrow

• 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
  done clear
  B)
  \[A{{l}_{2}}{{O}_{3}}\] with \[NaCl\] in solid state
  done clear
  C)
  a mixture of \[A{{l}_{2}}{{O}_{3}}\] and carbon in dry \[C{{l}_{2}}\] gas
  done clear
  D)
  \[A{{l}_{2}}{{O}_{3}}\] with \[C{{l}_{2}}\] gas
  done clear
  View Answer play_arrow

• question_answer5) Which of the following is the most basic oxide?                                    [AIPMT (S) 2006]
  A)
  \[A{{l}_{2}}{{O}_{3}}\]
  done clear
  B)
  \[S{{b}_{2}}{{O}_{3}}\]
  done clear
  C)
  \[B{{i}_{2}}{{O}_{3}}\]
  done clear
  D)
  \[Se{{O}_{2}}\]                   
  done clear
  View Answer play_arrow

• question_answer6) The stability of +1 oxidation state increases in the sequence                  [AIPMT (S) 2009]
  A)
  \[Al<Ga<In<Tl\]
  done clear
  B)
  \[Tl<In<Ga<Al\]
  done clear
  C)
  \[In<Tl<Ga<Al\]
  done clear
  D)
  \[Ga<In<Al<Tl\]
  done clear
  View Answer play_arrow

• 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)
  \[BC{{l}_{3}}>B{{F}_{3}}BB{{r}_{3}}\]
  done clear
  B)
  \[BB{{r}_{3}}>BC{{l}_{3}}>B{{F}_{3}}\]
  done clear
  C)
  \[BB{{r}_{3}}>B{{F}_{3}}>BC{{l}_{3}}\]
  done clear
  D)
  \[B{{F}_{3}}>BC{{l}_{3}}>BB{{r}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer8) Aluminium is extracted from alumina \[(A{{l}_{2}}{{O}_{3}})\] by electrolysis of a molten mixture of [AIPMT (S) 2012]
  A)
  \[A{{l}_{2}}{{O}_{3}}+HF+NaAl{{F}_{4}}\]
  done clear
  B)
  \[A{{l}_{2}}{{O}_{3}}+Ca{{F}_{2}}+NaAl{{F}_{4}}\]
  done clear
  C)
   \[A{{l}_{2}}{{O}_{3}}+N{{a}_{3}}Al{{F}_{6}}+Ca{{F}_{2}}\]
  done clear
  D)
  \[A{{l}_{2}}{{O}_{3}}+KF+N{{a}_{3}}Al{{F}_{6}}\]
  done clear
  View Answer play_arrow

• question_answer9) Which of the following structure is similar to graphite?                                   [NEET 2013]
  A)
  BN
  done clear
  B)
  B
  done clear
  C)
  \[{{B}_{4}}C\]
  done clear
  D)
  \[{{B}_{2}}{{H}_{6}}\]
  done clear
  View Answer play_arrow

• question_answer10) The stability of +1 oxidation state among Al,                                     [NEET 2015 (Re)] Ga, In and Tl increases in the sequence
  A)
  \[Ga<\ln <Al<Tl\]
  done clear
  B)
  \[Al<Ga<\ln <Tl\]
  done clear
  C)
                                                               
  done clear
  D)
  
  done clear
  View Answer play_arrow

• question_answer11) Which one of the following elements is unable to form \[\text{MF}_{\text{6}}^{\text{3-}}\text{ion}\]? [NEET - 2018]
  A)
  B
  done clear
  B)
  Al
  done clear
  C)
  Ga
  done clear
  D)
  In
  done clear
  View Answer play_arrow

• question_answer12) The correct order of atomic radii in group 13 elements is                           [NEET - 2018]
  A)
  \[\text{BGaAlTlIn}\]   
  done clear
  B)
  \[\text{BAlGaInTl}\]
  done clear
  C)
  \[\text{BAlInGaTl}\]
  done clear
  D)
  \[\text{BGaAlInTl}\]
  done clear
  View Answer play_arrow