Three test tubes $A, B$ and $C$ contain distilled water, an acidic solution and a basic solution res

Question

Three test tubes $A, B$ and $C$ contain distilled water, an acidic solution and a basic solution respectively. When red litmus solution is used for testing these solutions, the observed colour changes respectively will be\

Professor PC Thomas Classes · Answer

(a) : Colour of red litmus remains red in neutral solutions, become dark red in acidic and blue in presence of basic solutions. So, there will be no change in colour of red litmus in distilled water (test tube $A$ ). In test tube $B$, it becomes dark red and in test tube $C$, red litmus turns blue.\