The percentage of $p$-character of the hybrid orbitals in graphite and diamond are respectively

Which of the two ions from the list given below have the geometry that is explained by the same hybridization of orbitals: $NO_2^-$,$NO_3^-$,$NH_2^-$,$NH_4^+$,$SCN^-$?

The compounds with $sp^2$ hybridized central atom among the following are:
$(A)$ $H_2CO_3$
$(B)$ $SiF_4$
$(C)$ $BF_3$
$(D)$ $HClO_2$

In $sp$ hybridisation,the shape is:

Which one of the following is a correct set?

What is the hybridisation of each carbon in $H_2C = C = CH_2$?