Which of the following oxides reacts with both $HCl$ and $NaOH$?

Which of the following halides does not hydrolyse at room temperature?

The common basic structural unit in silicates and silica is

Which of the following is a neutral oxide?

$CO_2$ and $N_2$ do not support combustion. However,$CO_2$ is preferred over $N_2$ for extinguishing fires because $CO_2$ .......

The catenation tendency of $C, Si$ and $Ge$ is in the order $Ge < Si < C$. The bond energies (in $kJ \ mol^{-1}$) of $C-C, Si-Si$ and $Ge-Ge$ bonds, respectively, are: