The compound formed by $sp^3d$ hybridization will have which structure?

For which of the following hybridisation is the bond angle maximum?

What is the $CORRECT$ geometry and hybridisation for $SF_4$?

The type of hybrid orbitals used by the chlorine atom in $ClO_2^-$ is

Choose the correct code of characteristics for the given order of hybrid orbitals of the same atom,$sp < sp^2 < sp^3$:
$(i)$ Electronegativity
$(ii)$ Bond angle between same hybrid orbitals
$(iii)$ Size
$(iv)$ Energy level

Predict the hybridization of each carbon in the molecule of the organic compound given below. Also,indicate the total number of sigma $(\sigma)$ and pi $(\pi)$ bonds in this molecule.
$HC \equiv C-CO-CH_2-COOH$