Anhydrous ferric chloride is prepared by

Assertion $(A)$: The bond dissociation energy increases from $F_2$ to $Cl_2$ and then decreases to $I_2$.
Reason $(R)$: The low bond energy of fluorine is due to the repulsion between the lone pairs of electrons in two fluorine atoms.
The correct option among the following is

When $1 \ mol$ of fluorine reacts with $2 \ mol$ of hot and concentrated $KOH$,the products formed are $KF$,$H_2O$,and $O_2$. What is the molar ratio of $KF$,$H_2O$,and $O_2$ produced?

Which substance is used as a gaseous insulator in high-voltage generators?

Which reaction cannot be used for the production of halogen acid?

Concentrated $HNO_3$ reacts with iodine to give: