Question

What is universal indicator?
b) Solution „A‟ gives pink colour when a drop of phenolphthalein indicator is added to it. Solution „B‟ gives a red colour when a drop of methyl orange is added to it. What type of solutions are A and B and which of these will have higher pH?
c) Four solutions A, B, C, D showed pH as 4, 1,11,9 respectively when treated with universal indicator. Which solution is
a) Strongly alkaline b) Strongly acidic c) Weakly acidic d) Weakly alkaline

Answer 1

Answer:

A universal indicator is a pH indicator made of a solution of several compounds that exhibits several smooth colour changes over a wide range pH values to indicate the acidity or alkalinity of solutions. ... Colour matching charts are supplied with the specific test strips purchased.

Explanation:

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