Which of the allotropic forms of carbon is aromatic in nature?

Choose the correct statement about silicones.

$Na_2CO_3$ reacts with $SO_2$ in an alkaline medium to form:

Which of the following organosilicon compounds on hydrolysis will give a three-dimensional silicone?

$Kieselghur$ is an amorphous form of silica which is used in filtration plants. Which of the following is true about it?

Identify the correct statements:
$(I)$ Germanium exists only in traces.
$(II)$ The order of electronegativity of $Si, Ge, Sn$ is $Sn > Ge > Si$.
$(III)$ All group $14$ elements are available in solid state.