What liquids are neither acid or base?

Answer 1

"Why won't anyone answer?"

Probably because it's not clear what the question is supposed to mean. The general term for liquids/solutions that are neither acidic nor basic is "neutral", but that's so blindingly obvious that it seems unlikely to have been what you were looking for.

Many liquids are neither acidic nor basic: alkanes (well, those that are liquid instead of solid or gaseous), for example. Pure water is another. Most alcohols (phenol being a significant exception ... it's not strongly acidic, but it's acidic enough that an alternative name for it is "carbolic acid").

Answer 2

Distilled water is an example of a liquid that is neither an acid nor a base. Pure water has a neutral pH of 7, meaning it is neither acidic nor basic.