Question

Which one of the following solutions would you use to test the pH of a given sample?
(1) blue litmus solution
(2) red litmus solution
(3) universal indicator solution (4) mixture of red and blue litmus solution

Answer 1

3) universal indicator solution (4) moisture of red and blue litmus solution

Answer 2

Universal indicator solution is mainly used to test the pH of any given sample.

Explanation:

• It is a mixture or a solution that is made up of several other solutions of compounds/ indicators that adopt several smooth color changes having numerous pH values in order to indicate or find the acidic or alkaline nature of the given solution.
• The universal indicator not only comes as a solution but also as a paper to check the pH of the given sample.