The decreasing order of bond dissociation energies of $C-C$, $C-H$, and $H-H$ bonds is:

The correct order of increasing bond length of $C - H, C - O, C - C$ and $C=C$ is

$BF_3$ is used as a catalyst in several industrial processes due to its:

Select true or false statements :
$(a)$ Promotion of electron is essential condition prior to hybridisation
$(b)$ In $VSEPR$ theory,two or three electron pairs of a multiple bond are treated as a single super pair
$(c)$ Bond length for $CO_2$ lies between double and triple bonds
$(d)$ $Ne_2$ does not exist

The maximum number of atoms that can be in one plane in the molecule $p$-nitrobenzonitrile are

The formal charges on the atoms marked as $(1)$ to $(4)$ in the Lewis representation of $HNO_3$ molecule respectively are