Give uses of $CO_{2}$.

$C_{60}$ contains:

In which of the following is the inert pair effect most prominent?

Which one of the following oxides is neutral?

Non-oxide ceramics can be

Which of the following statements are correct?
$(i)$ $CCl_4$ undergoes hydrolysis easily
$(ii)$ Diamond has directional covalent bonds
$(iii)$ Fullerene is the thermodynamically most stable allotrope of carbon
$(iv)$ Glass is a man-made silicate
The correct answer is