Number of molecules/species from the following having one unparred electron $15$. . . . . .  $\mathrm{O}_2, \mathrm{O}_2^{-1}, \mathrm{NO}, \mathrm{CN}^{-1}, \mathrm{O}_2^{2-}$

Which one of the following is paramagnetic

For $F_2$ and $OF$ molecules consider the following statements 
$(a)$ Bond order for both is one
$(b)$ $OF$ is paramagnetic but $F_2$ is diamagnetic
$(c)$ $F_2$ is more likely to dissociate into atoms than $OF$
$(d)$ Both have greater number of electrons in $BMO$ than that in $ABMO$
Which of the following statements are true $(T)$ or false $(F)$ respectively

During change of $O^2$ to $O_2^-$ ion, the electron adds on which one of the following  orbitals?

What is the effect of the following processes on the bond order in $\mathrm{N}_{2}$ and $\mathrm{O}_{2}$ ?

$(A)$ ${{\rm{N}}_2} \to {\rm{N}}_2^ +  + {{\rm{e}}^ – }$

$(B)$ ${{\rm{O}}_2} \to {\rm{O}}_2^ +  + {{\rm{e}}^ – }$