$FeS_2$ is

What is the product obtained from the hydrolysis of $(Me)_2SiCl_2$?

For correct statement use $T$ and for incorrect use $F$:
$(A)$ Hydrolysis of Marshall's acid gives $H_2SO_4$ and $H_2O_2$ as final products.
$(B)$ In $SCNSiH_3$ structure,the geometry around $N$ is bent.
$(C)$ The basic unit for silicates is $SiO_4^{4-}$.
$(D)$ $NH_4Cl + NaOH \to NH_3 \uparrow$.

$A$ thin film of aluminum deposited on glass acts as a good mirror because ...............

In the following reaction,identify the nature of the product formed by the complete hydrolysis of the underlined atom at $R.T.$:
$\underline{S}OCl_2 + H_2O \longrightarrow H_2SO_3 + HCl$

Among the following elements,$X$ exhibits maximum catenation and $Y$ is the least abundant on earth. $X$ and $Y$ elements are