Question

Three liquids are given to you. One is hydrochloric acid, another is a sodium hydroxide solution and the third is a sugar solution. How will you identify them using red litmus paper?

Answer 1

Answer:

Place a drop of each liquid on turmeric indicator. The solution which changes the colour of the indicator to red is basic in nature, i.e., it is sodium hydroxide. ... While the mixture which does not show any colour change in indicator contains hydrochloric acid which was neutralised on addition of sodium hydroxide.