Which of the following geometries corresponds to $sp^3d$ hybridization of the central atom?

Which reaction involves a change in the electron pair geometry for the underlined element?

In which of the following does the central atom $NOT$ use $sp^3$ hybrid orbitals in its bonding?

The hybridizations of carbon in graphite,diamond and $C_{60}$ are respectively

Consider the following reactions:
$(i)$ $PCl_3 + 3H_2O \to H_3PO_3 + 3HCl$
$(ii)$ $SF_4 + 3H_2O \to H_2SO_3 + 4HF$
$(iii)$ $BCl_3 + 3H_2O \to H_3BO_3 + 3HCl$
$(iv)$ $XeF_6 + 3H_2O \to XeO_3 + 6HF$
Then according to given information the incorrect statement is

$C-H$ bond length is least in