What is the expected hybridization of $N$ in the given molecule?

How many $sp^2$ and $sp$ hybridized carbon atoms are present respectively in the following compound? (The structure is $1,2-didehydrobenzene$ or $benzyne$ derivative,specifically $1,2-didehydrocyclohexadiene$ structure shown in the image).

What is the hybridization of sulfur in $SO_2$?

The number of species from the following in which the central atom uses $sp^3$ hybrid orbitals in its bonding is . . . . . . .
$NH_3, SO_2, SiO_2, BeCl_2, CO_2, H_2O, CH_4, BF_3$

The hybridization of carbon in graphite and diamond is respectively ........

What is the hybridization state of the central atom in the conjugate base of $NH_4^{+}$ ion?