The increasing order of electronegativity of hybrid orbitals is ..........

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.
$HC \equiv C-CO-CH_2-COOH$

The hybridizations of $C_2$ and $C_3$ in the molecule $H_3C-CH=C=CH-CH_3$ are respectively:

What do we get from the hybridization of one $s$ and one $p$ orbital?

What is the state of hybridisation of carbon in $(a)$ $CO_3^{2-}$,$(b)$ diamond,and $(c)$ graphite?

The hybridization of orbitals of $N$ atom in $NO_{3}^{-}$,$NO_{2}^{+}$ and $NH_{4}^{+}$ are respectively $:$