Question

What is an acid -base indicater? Give one example.
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Answer 1

Answer:

For example, greasewood indicates saline soil; mosses often indicate acid soil. Tubifex worms indicate oxygen-poor and stagnant water unfit to drink. The presence of certain species of plants suggests how well other species might grow in the same place.

Answer 2

Answer:

Those substances which change their colors in acid and base are called acid-base indicators for example litmus solution,methyl red, methyl orange and beetroot etc.