The element $X$ which forms a stable product of the type $XCl_4$ is $....$

Who discovered the allotrope of carbon known as fullerene?

Choose the correct statements about allotropes of carbon:
$I$. Graphite has a layered structure.
$II$. Buckminsterfullerene is not aromatic in nature.
$III$. The distance between two adjacent layers in graphite is $340 \ pm$.
$IV$. The hybridization of carbons in graphite and Buckminsterfullerene is the same $(sp^2)$.

In the following reaction,identify the nature of the product formed by the complete hydrolysis of the underlined atom at $R.T.$:
$\underline{Si}Cl_4 + H_2O \longrightarrow H_4SiO_4 + HCl$

$A$ gas that cannot be collected over water is

What products will be formed when calcium carbide reacts with nitrogen at $1000 \ ^oC$?