Pick out the correct statement.

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(D) $1$. $SiC$ (Carborundum) is a covalent carbide. It is extremely hard and resistant to hydrolysis under normal conditions.$2$. $Al_4C_3$ (Aluminum

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$B$ and $C$ both.

Vedclass · Answer

(D) $1$. $SiC$ (Carborundum) is a covalent carbide. It is extremely hard and resistant to hydrolysis under normal conditions.$2$. $Al_4C_3$ (Aluminum carbide) is an ionic carbide (methanide). On hydrolysis,it reacts with water to produce methane gas: $Al_4C_3 + 12H_2O \rightarrow 4Al(OH)_3 + 3CH_4$.$3$. $Be_2C$ (Beryllium carbide) is also an ionic carbide (methanide). On hydrolysis,it produces methane gas: $Be_2C + 4H_2O \rightarrow 2Be(OH)_2 + CH_4$.Therefore,both statements $B$ and $C$ are correct.

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