$SiCl_4$ on hydrolysis gives:

Red lead is

In which of the following silicates,only two corners per tetrahedron are shared?
$I$. Pyro silicate
$II$. Cyclic silicate
$III$. Double chain silicate
$IV$. Single chain silicate
$V$. $3D$ silicate
$VI$. Sheet silicate

Reaction of $NaCl$ with conc. $H_2SO_4$ liberates a gas,$X$ that turns moist blue litmus paper red. When gas $X$ is passed into a test tube containing egg shell powder suspended in water,another gas,$Y$ is generated which when passed through lime water makes it milky. The gases $X$ and $Y$,respectively,are

$C_{60}$,an allotrope of carbon,contains:

Give the preparation of carbon monoxide. Explain the properties of carbon monoxide and give its uses.