Match the following:
Column $I$ Column $II$
$A$. $Bi^{3+} \longrightarrow (BiO)^{+}$ $P$. Heat
$B$. $[AlO_2]^{-} \longrightarrow Al(OH)_3$ $Q$. Hydrolysis
$C$. $SiO_4^{4-} \longrightarrow Si_2O_7^{6-}$ $R$. Acidification
$D$. $(B_4O_7^{2-}) \longrightarrow [B(OH)_3]$ $S$. Dilution by water

  • A
    $A-Q; B-R; C-P; D-Q, R$
  • B
    $A-P; B-Q; C-R; D-Q, R$
  • C
    $A-Q; B-R; C-Q; D-R, P$
  • D
    $A-Q; B-P; C-S; D-R, Q$

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Select the incorrect statement:
$a$. $PCl_5$ forms a weak monobasic acid during hydrolysis.
$b$. In $B_3N_3H_6$,nucleophilic attack occurs on the $B$ atom.
$c$. $Al_2Cl_6$ is a polar and planar molecule.
$d$. In $AlF_3$,the hybridization of $Al$ is $sp^2$.

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Borax is converted into crystalline boron by the following steps :
$Borax$ $\xrightarrow{HCl} (X)$ $\xrightarrow{\Delta} B_2O_3$ $\xrightarrow{\Delta, Y} B$
Identify $X$ and $Y$ respectively.

$2BF_3 + 6NaH \xrightarrow{450 \ K} X_{(g)} + 6NaF$. Which of the following statements is \textbf{Incorrect} for $X$?

$BCl_3$ exists as a monomer,whereas $AlCl_3$ is dimerized through halogen bridging. Give reason. Explain the structure of the dimer of $AlCl_3$ also.

Diborane reacts with ammonia under different conditions to give a variety of products. Which one among the following is not formed in these reactions?

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