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(C) ) Incorrect: Aluminium is amphoteric and reacts with both $HCl$ and $NaOH$ to liberate $H_2$ gas.$B$) Incorrect: The formula of sodium metaborate

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$C$ & $D$

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(C) ) Incorrect: Aluminium is amphoteric and reacts with both $HCl$ and $NaOH$ to liberate $H_2$ gas.$B$) Incorrect: The formula of sodium metaborate is $NaBO_2$. $Na_3BO_3$ is sodium orthoborate.$C$) Correct: Boric acid $(H_3BO_3)$ acts as a weak monobasic Lewis acid by accepting $OH^-$ from water: $B(OH)_3 + 2H_2O \rightarrow [B(OH)_4]^- + H_3O^+$.$D$) Correct: Due to the inert pair effect,the stability of the $+1$ oxidation state increases down the group $13$ $(Al < Ga < In < Tl)$,making $Tl^+$ more stable than $Tl^{3+}$.

List-$I$ (Group $13$ element)	List-$II$ (Metallic radius,$pm$)
$A$. $Al$	$I$. $135$
$B$. $Ga$	$II$. $143$
$C$. $In$	$III$. $170$
$D$. $Tl$	$IV$. $167$

Select the correct statements from the following:
$A$) Aluminium liberates $H_2$ gas with dil. $HCl$ but not with aqueous $NaOH$.
$B$) Formula of sodium metaborate is $Na_3BO_3$.
$C$) Boric acid is a weak monobasic acid.
$D$) For thallium,$+1$ state is more stable than $+3$ state.

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Match the following:
List-$I$ (Group $13$ element) List-$II$ (Metallic radius,$pm$)
$A$. $Al$ $I$. $135$
$B$. $Ga$ $II$. $143$
$C$. $In$ $III$. $170$
$D$. $Tl$ $IV$. $167$

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The reason for the polymeric nature of boric acid is .....

Identify the correct statements about Boron.
$I.$ It has a high melting point.
$II.$ It has a high density.
$III.$ It has high electrical conductivity.
$IV.$ The $^{10}B$ isotope of it has a high ability to absorb neutrons.

The acidic strength of boron trihalides follows the order:

Aluminium reacts with dilute $HCl$ and liberates a gas '$A$' and with aqueous alkali liberates a gas '$B$'. $A$ and $B$ respectively are

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Select the correct statements from the following:$A$) Aluminium liberates $H_2$ gas with dil. $HCl$ but not with aqueous $NaOH$.$B$) Formula of sodium metaborate is $Na_3BO_3$.$C$) Boric acid is a weak monobasic acid.$D$) For thallium,$+1$ state is more stable than $+3$ state.