Question

What is the universal indicator? Write two names of Natural Indicator. ​

Answer 1

If the test solution is of a dark colour, it is preferable to use a paper universal indicator. Solution: The main components of a universal indicator, in the form of a solution, are thymol blue, methyl red, bromothymol blue, and phenolphthalein.Natural indicator is a substance which is found naturally and can determine whether the substance is acidic or basic. Some examples of natural indicators are turmeric, grape juice, red cabbage, cherries, onion, beetroot etc. Synthetic indicators are indicators which are synthesized in the laboratory.