$A$ group $13$ element '$X$' reacts with chlorine gas to produce a compound $XCl_3$. $XCl_3$ is electron deficient and easily reacts with $NH_3$ to form $Cl_3X \leftarrow NH_3$ adduct,however,$XCl_3$ does not dimerize. $X$ is

  • A
    $B$
  • B
    $Al$
  • C
    $In$
  • D
    $Ga$

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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

The correct order of Lewis acidity for $BX_3$ is:

In the following reaction,identify the nature of the product formed by the complete hydrolysis of the underlined atom at $R.T.$:
$\underline{B}F_3 + 3H_2O \longrightarrow H_3BO_3 + 3HF$

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Hydrated $AlCl_3$ is used as :

$A$. What are silicones? State the uses of silicones.
$B$. What are boranes? Give chemical equation for the preparation of diborane.

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