Among the given pairs ,in which pair first compound reacts faster than second compound in `S_(N^(1))` reaction ?

Among the given pairs in which pair, first compound has higher boiling point than second ?

Among the given pairs in which pairs first compound has higher boiling point than second?

Among the given pairs, in which pair second compound has less enol content:

Among the given pairs, in which pair second compound has less enol content:

Among the given pairs, in which pair second compound is more acidic than first ?

Among the given pairs, in which pair second compound has less enol content than first compound?

In the given pairs of alkyl-halide ,in which pair the first compund is more reactive than second compound topward S_(N^(2)) reaction ?