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(A) . Aluminium becomes passive in concentrated $HNO_3$ due to the formation of a protective oxide layer on its surface,so it does not liberate $H_2$

Vedclass · Accepted Answer

Aluminium dissolves in conc. $HNO_3$ and liberates $H_2$ gas

Vedclass · Answer

(A) . Aluminium becomes passive in concentrated $HNO_3$ due to the formation of a protective oxide layer on its surface,so it does not liberate $H_2$ gas. This statement is incorrect.$B$. Borazole $(B_3N_3H_6)$ has a structure similar to benzene. It contains $12$ $\sigma$ bonds ($6$ $B-H$ and $N-H$ bonds,and $6$ $B-N$ bonds) and $3$ $\pi$ bonds. This statement is correct.$C$. Gallium oxide $(Ga_2O_3)$ is amphoteric in nature as it reacts with both acids and bases. This statement is correct.$D$. $BF_3$ has an incomplete octet on the Boron atom,making it an electron-deficient species and thus a Lewis acid. This statement is correct.

The incorrect statement from the following is:

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