Question

ed cabbage contains a substance called flavin which acts as a pH indicator.
(A pH indicator is a substance that changes colour around a particular pH value. They are added to other substances to determine the pH.)
Results of adding cabbage juice to solutions of different pH values are shown below:

The red cabbage juice colour chart indicates the colour change it causes on addition to a substance with a particular pH value. For example, on adding red cabbage juice to a substance with pH 8.5, it will cause the colour to change to blue.
Arya wanted to test a Liquid X. She took a few drops of the liquid on a red litmus paper and observed a colour change from red to blue. She then took a few drops of Liquid X and added red cabbage juice to it. What of these colours could she definitely NOT have seen?



A) only red

B). only blue

C). both red and purple

D). both green and yellow​

Answer 1

Answer:

both red and purple

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