Question

An example of a natural indicator ia. C tick the cooret option

Answer 1

Answer:

Many plants contain their own indicators – turmeric, red cabbage juice and beetroot juice are three good examples. Other examples are tea and red grape juice. Hydrangea flowers are different colours depending on whether the soil is acid or alkali. In acid soil they are blue and in alkaline soil they are red!

Explanation:

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Answer 2

Answer:

Natural indicators are obtained from natural sources. All the above examples are natural indicators. A solution of china rose turns green in a basic solution, and bright pink or magenta in an acidic solution. Morning glories contain an anthocyanin called "heavenly blue anthocyanin" which changes from purplish red at pH6.6 to blue at pH7.7. Blueberries change from blue (around pH2.8−3.2) to red in a strongly acidic solution.

Explanation:

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