What is produced by the reaction of $Ca(OH)_2$ with $SO_2$?

The most basic oxide of elements in group $14$ of the periodic table is

Which allotropic form of carbon does not have hexagonal rings in its structure?

Identify the incorrect statement about $SiO_2$ (silica) from the following.

Carbon and silicon belong to group $IV$. The maximum coordination number of carbon in commonly occurring compounds is $4$,whereas that of silicon is $6$. This is due to

The formula of $3$ membered discrete chain silicate is