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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-$I$ (Element)	List-$II$ (Application)
$A$. $Cs$	$I$. High temperature thermometer
$B$. $Ga$	$II$. Water repellent sprays
$C$. $B$	$III$. Photoelectric cells
$D$. $Si$	$IV$. Bullet proof vest

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.

Similar Questions

The formation of $Al_2O_3$ is accompanied by the release of a large amount of energy. This property is utilized in which of the following?

Aluminium reacts with $NaOH$ and forms compound '$X$'. If the coordination number of aluminium in '$X$' is $6$, the correct formula of $X$ is:

Which of the following is the correct order of the reducing power of $Al, Ga, In,$ and $Tl$?

$Na_2B_4O_7 \cdot 10H_2O \xrightarrow{\Delta} X + NaBO_2 + H_2O$
$X + Cr_2O_3 \xrightarrow{\Delta} Y$ (Green coloured)
$X$ and $Y$ 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.