Which type of bond is formed between similar atoms?

The bond dissociation energy of $B-F$ in $BF_3$ is $646 \ kJ \ mol^{-1}$ whereas that of $C-F$ in $CF_4$ is $515 \ kJ \ mol^{-1}.$ The correct reason for higher $B-F$ bond dissociation energy as compared to that of $C-F$ is

Which of the following contains $p \pi - d \pi$ bonding?

In carbon monoxide $(CO)$,how are the carbon and oxygen atoms bonded?

The bond having the highest bond energy is

$CCl_4$ cannot give a precipitate with $AgNO_3$ due to: