The major product obtained in the following reaction is Chlorobenzene + chlorine $$\xrightarrow[\mathrm{FeCl}_3]{\text { Anhydrous }}$$ product (Major)

The major product obtained in the following reaction is

When tert-butyl bromide is heated with silver fluoride, the major product obtained is

Identify the reagent used in following conversion. Chloroethane $$\stackrel{\mathrm{A}}{\longrightarrow}$$ Nitro ethane