Submitted by examrobotsa on Thu, 01/01/1970 - 05:30 Acid turns blue litmus red and base turns red litmus blue. A student tested a liquid with a red litmus paper which remained red with no change. This shows that the liquidis not a base is not an acidis neither an acid nor a basemust be pure waterstats: 0,168,192,168,56,80,56