Bases: True or False QuizVersión en línea Test key properties of bases. por Archa 1 Bases turn blue litmus paper red. Yes No 2 Hydroxide ion (OH⁻) is the common ion liberated when alkalis dissolve in water. Yes No 3 All metal oxides are acidic in nature Yes No 4 They turn red litmus paper blue. Yes No 5 Alkalis are bases that dissolve in water. Yes No 6 Potassium hydroxide (KOH) is a base. Yes No 7 Milk of Lime is the common name of potassium hydroxide. Yes No 8 Chemical formula of calcium hydroxide is CaOH. Yes No 9 The chemical formula of hydroxide ion is OH⁺ Yes No 10 Hydroxide ions are produced when metal oxides dissolve in water. Yes No